2334:
173:– set of units which can be used to specify anything which can be measured. Historically, systems of measurement were initially defined and regulated to support trade and internal commerce. Units were arbitrarily defined by fiat (see statutory law) by the ruling entities and were not necessarily well inter-related or self-consistent. When later analyzed and scientifically, some quantities were designated as base units, meaning all other needed units of measure could be derived from them.
20:
100:
2664:
2438:
2303:(CGPM) was set up and given responsibility for the new international prototype of the kilogram and international prototype of the metre which replaced the old French copies as the definitive prototypes of the metre and the kilogram.
3164:
23:"The metric system is for all people for all time." (Condorcet 1791) Four objects used in making measurements in everyday situations that have metric calibrations are shown: a
2964:
2558:
3209:
2597:
2544:
describes the 1875 treaty and its development to the modern day. Three organisations, the CGPM, CIPM and BIPM were set up under the convention.
2475:
260:
3159:
2801:
121:
2778:
2600:
have issued directives/recommendations to harmonise the use of units of measure. These documents endorse the use of SI for most purposes.
2569:
2931:
3731:
3478:
3203:
2906:
2547:
2491:
2300:
3756:
2926:
2921:
2854:
2604:
3751:
3468:
3288:
2916:
2581:
2357:– metrication is the process by which legacy, national-specific systems of measurement were replaced by the metric system.
2901:
2886:
2881:
243:
Articles that exist for many units of measure that are related to various flavours of the metric system are catalogued below.
3787:
3782:
3736:
3387:
3377:
3278:
1887:
1664:
341:
2896:
2891:
2668:
3792:
3362:
3300:
2957:
2874:
2752:
3726:
3513:
2911:
2250:– the metric system developed from a decimal system of measurement adopted by France after the French Revolution.
3766:
3741:
3594:
3342:
3650:
2795:
2733:
2533:
Prior to 1875 the metric system was controlled by the French
Government. In that year, seventeen nations signed the
2421:
147:
129:
3620:
3584:
3493:
3231:
3169:
2433:
227:
205:
3706:
3691:
3645:
3523:
3498:
3483:
3443:
3367:
2950:
3701:
3686:
3676:
3666:
3604:
3574:
3544:
3508:
3433:
3352:
3327:
3322:
3317:
3310:
3014:
2588:
services for the CGPM and CIPM, houses the secretariat for these organisations and hosts their formal meetings.
2386:
125:
3696:
3671:
3635:
3599:
3579:
3569:
3554:
3549:
3539:
3448:
3372:
3273:
3004:
2994:
2715:
2625:
2462:
2313:
185:
3844:
3761:
3681:
3640:
3630:
3559:
3463:
3402:
3397:
3357:
3347:
3337:
3332:
3236:
3138:
3052:
3047:
3009:
2847:
2247:
1555:
750:
3096:
3589:
3564:
3503:
3453:
3438:
3428:
3392:
3283:
3246:
3215:
3086:
2863:
2481:
3625:
3473:
3407:
3305:
3251:
3241:
2448:
2406:
223:
Discussions of the underlying philosophy of the metric system (and other systems of measure) include:
3518:
3057:
2478:
was the principal variant of the metric system that evolved in stages until it was superseded by SI.
2306:
1881 – International
Electric Congress agrees on standards for electrical units (formalised in 1893)
2381:
2361:
1396:
1227:
571:
110:
2782:
3081:
3032:
2840:
2621:
2366:
1835:
232:
114:
3839:
2401:
2396:
1359:
681:
2973:
2721:
2638:
2416:
2371:
170:
82:
that trace their origin to the decimal system of measurement introduced in France during the
79:
2709:
2697:
2665:
Plan for
Establishing Uniformity in the Coinage, Weights, and Measures of the United States
2522:
2391:
2376:
2262:
1792 – Initiation of a decimal system of measurement by the French
Revolutionary Government
686:
2537:
and the management and administration of the system passed into international control.
8:
3746:
3266:
3197:
2727:
2469:
2411:
2078:
2073:
1532:
1249:
1119:
3261:
3037:
2445:'s report (1790) which included a proposal for decimal system based on a "decimal foot"
1727:
553:
2554:
or CGPM) – a meeting every four to six years of delegates from all member states.
3849:
2791:
2650:
2644:
2426:
2333:
1769:
1764:
1618:
708:
511:
443:
167:– set of interacting or interdependent components forming an integrated whole.
83:
2703:
3293:
2672:
2541:
2534:
2510:
2494:
was a variant of the metric system used in French and
Russian industry between the
2485:
2442:
2296:
1945:
1421:
1140:
637:
464:
383:
278:
189:
2565:
or CIPM) – an advisory body to the CGPM consisting of prominent metrologists.
3458:
2739:
2628:, which are based on defined values of physical constants, in use since May 2019.
2280:
1861 – Concept of unit coherence introduced by
Maxwell – the base units were the
2183:
1994:
1908:
1840:
1811:
1806:
1785:
1317:
621:
299:
200:
3808:
3382:
2999:
2758:
2691:
2593:
2342:
2099:
1882:
1643:
1375:
1110:
918:
787:
67:
2309:
1921 – Convention of the metre extended to cover all physical units of measure
3833:
3256:
3128:
3068:
2609:
2338:
2274:
2225:
1680:
1613:
1571:
1506:
1380:
1296:
986:
210:
74:
2777:
3813:
3101:
3091:
3076:
2685:
2499:
2346:
2220:
2094:
2052:
1967:
1722:
1592:
1401:
1312:
1291:
1135:
1024:
958:
913:
897:
829:
703:
401:
195:
24:
3412:
3143:
3042:
2942:
2495:
2354:
2199:
2036:
1989:
1924:
1706:
1527:
1338:
1182:
981:
876:
771:
659:
527:
32:
2316:" (SI) a coherent system of units based on the kilogram, metre, second,
188:(SI) is the system of units that has been officially endorsed under the
19:
2281:
1354:
1029:
892:
592:
320:
47:
28:
2827:
70:
is provided as an overview of and topical guide to the metric system:
2832:
2585:
2057:
2031:
1929:
1819:
1462:
1161:
1050:
576:
532:
506:
427:
294:
2577:
2461:
Four variants of the metric system that predate the introduction of
99:
2484:
was a little-used variant of the metric system that normalised the
2141:
2010:
1685:
1622:
1254:
1203:
490:
422:
273:
40:
3818:
2258:
Principal dates in the development of the metric system include:
2162:
2015:
1903:
1638:
1232:
1002:
766:
745:
616:
548:
362:
315:
255:
36:
3488:
2321:
2317:
2289:
2204:
1856:
1790:
1743:
1597:
1484:
1443:
1275:
1177:
1115:
1094:
855:
834:
664:
642:
597:
448:
406:
378:
357:
164:
55:
2253:
2115:
1815:
1748:
1576:
1550:
1511:
1438:
1270:
1156:
1089:
1045:
871:
813:
792:
485:
336:
2312:
1960 – The CGPM published the metric system under the name "
160:
The metric system can be described as all of the following:
2679:
2285:
2178:
2157:
2136:
2120:
1972:
1950:
1861:
1701:
1489:
1467:
1208:
1072:
1067:
1007:
963:
939:
934:
808:
729:
469:
51:
43:
2506:
Between 1812 and 1839 France used a quasi-metric system:
1659:
1333:
850:
724:
59:
2632:
2456:
2064:
Derived coherent metric unit without a special name
1980:
Derived coherent metric unit without a special name
1958:
Derived coherent metric unit without a special name
1847:
Derived coherent metric unit without a special name
1826:
Derived coherent metric unit without a special name
1713:
Derived coherent metric unit without a special name
1429:
Derived coherent metric unit without a special name
1409:
Derived coherent metric unit without a special name
1240:
Derived coherent metric unit without a special name
694:
Derived coherent metric unit without a special name
672:
Derived coherent metric unit without a special name
650:
Derived coherent metric unit without a special name
2465:(1960) are described in varying levels of detail:
16:Overview of and topical guide to the metric system
3831:
2559:International Committee for Weights and Measures
2528:
2242:
2209:Derived coherent SI unit without a special name
1977:Derived coherent SI unit without a special name
1774:Derived coherent SI unit without a special name
1627:Derived coherent SI unit without a special name
1426:Derived coherent SI unit without a special name
1406:Derived coherent SI unit without a special name
1364:Derived coherent SI unit without a special name
1322:Derived coherent SI unit without a special name
1237:Derived coherent SI unit without a special name
1145:Derived coherent SI unit without a special name
1124:Derived coherent SI unit without a special name
691:Derived coherent SI unit without a special name
669:Derived coherent SI unit without a special name
647:Derived coherent SI unit without a special name
581:Derived coherent SI unit without a special name
411:Derived coherent SI unit without a special name
179:
2615:
2598:International Organization for Standardization
89:
2958:
2848:
2657:
1602:Derived SI metric unit without a special name
2779:International Bureau of Weights and Measures
2570:International Bureau of Weights and Measures
2041:Derived coherent SI unit with a special name
1753:Derived coherent SI unit with a special name
2439:Plan for Establishing Uniformity in the USA
2125:Non-SI unit permitted for use with SI units
1560:Non-SI unit permitted for use with SI units
1516:Non-SI unit permitted for use with SI units
1494:Non-SI unit permitted for use with SI units
1280:Non-SI unit permitted for use with SI units
1077:Non-SI unit permitted for use with SI units
1012:Non-SI unit permitted for use with SI units
839:Non-SI unit permitted for use with SI units
797:Non-SI unit permitted for use with SI units
755:Non-SI unit permitted for use with SI units
734:Non-SI unit permitted for use with SI units
474:Non-SI unit permitted for use with SI units
453:Non-SI unit permitted for use with SI units
128:. Unsourced material may be challenged and
2972:
2965:
2951:
2855:
2841:
2624:– changes in the definitions of the
2548:General Conference on Weights and Measures
2516:
2301:General Conference on Weights and Measures
2254:Chronological history of the metric system
1472:Multiple or submultiple of an SI base unit
944:Multiple or submultiple of an SI base unit
602:Multiple or submultiple of an SI base unit
238:
2576:or BIPM) – an organisation based at
2574:Bureau international des poids et mesures
2563:Comité international des poids et mesures
2328:
148:Learn how and when to remove this message
2680:Persons influential in the metric system
2605:European units of measurement directives
2552:Conférence générale des poids et mesures
2332:
218:
18:
2582:international prototype of the kilogram
2085:Derived metric unit with a special name
2022:Derived metric unit with a special name
2001:Derived metric unit with a special name
1734:Derived metric unit with a special name
1387:Derived metric unit with a special name
1058:Derived metric unit with a special name
925:Derived metric unit with a special name
862:Derived metric unit with a special name
820:Derived metric unit with a special name
715:Derived metric unit with a special name
497:Derived metric unit with a special name
434:Derived metric unit with a special name
369:Derived metric unit with a special name
348:Derived metric unit with a special name
327:Derived metric unit with a special name
306:Derived metric unit with a special name
285:Derived metric unit with a special name
3832:
2862:
2784:The International System of Units (SI)
2476:Centimetre–gram–second system of units
1955:Derived SI unit without a special name
1475:Multiple or submultiple of a base unit
1453:Multiple or submultiple of a base unit
1218:Multiple or submultiple of a base unit
1017:Multiple or submultiple of a base unit
2946:
2836:
2753:Outline of metrology and measurement
126:adding citations to reliable sources
93:
2230:Derived SI unit with a special name
2188:Derived SI unit with a special name
2167:Derived SI unit with a special name
2104:Derived SI unit with a special name
1913:Derived SI unit with a special name
1892:Derived SI unit with a special name
1690:Derived SI unit with a special name
1669:Derived SI unit with a special name
1650:Derived SI unit with a special name
1581:Derived SI unit with a special name
1343:Derived SI unit with a special name
1301:Derived SI unit with a special name
1166:Derived SI unit with a special name
1099:Derived SI unit with a special name
1055:Derived SI unit with a special name
1034:Derived SI unit with a special name
991:Derived SI unit with a special name
904:Derived SI unit with a special name
881:Derived SI unit with a special name
776:Derived SI unit with a special name
626:Derived SI unit with a special name
516:Derived SI unit with a special name
13:
2995:International System of Units (SI)
2790:(8th ed.), pp. 108–110,
2633:Metrication groups and authorities
2492:Metre–tonne–second system of units
14:
3861:
2821:
2734:William Thomson, 1st Baron Kelvin
2457:Historical metric system variants
2422:Metrication in the United Kingdom
192:since 1960. Child articles are:
2434:Metrication in the United States
228:Coherence (units of measurement)
206:Non-SI units mentioned in the SI
98:
78:– various loosely related
2932:Technology and applied sciences
2807:from the original on 2021-06-04
2771:
1:
3005:US customary units (USCS/USC)
2907:Natural and physical sciences
2764:
2716:Jean Baptiste Joseph Delambre
2626:International System of Units
2529:Politics of the metric system
2314:International System of Units
2273:become the standards for the
186:International System of Units
2248:History of the metric system
2243:History of the metric system
180:Essence of the metric system
7:
2927:Society and social sciences
2922:Religion and belief systems
2746:
2653:(United Kingdom, 1969–1981)
2616:Future of the metric system
2486:acceleration due to gravity
2482:Gravitational metric system
90:Nature of the metric system
10:
3866:
2750:
2658:Metric system publications
2449:United States Metric Board
2407:Metrication in New Zealand
1501:No specified relationship
1265:No specified relationship
1084:No specified relationship
543:No specified relationship
3801:
3775:
3719:
3659:
3613:
3532:
3421:
3224:
3190:
3183:
3152:
3121:
3114:
3067:
3058:English Engineering Units
3025:
2987:
2980:
2870:
2427:British Metrication Board
2150:No specified relationship
1938:No specified relationship
1909:radiation dose equivalent
1841:radiation dose equivalent
1799:No specified relationship
1418:metre squared per second
2580:that has custody of the
2472:formed the basis for SI.
2387:Metrication in Hong Kong
2382:Metrication in Guatemala
2362:Metrication in Australia
1397:metre per second squared
1228:kilogram per cubic metre
572:candela per square metre
3097:Quantum chromodynamical
2917:Philosophy and thinking
2622:2019 revision of the SI
2517:History of metric units
2367:Metrication in Barbados
2297:Convention of the metre
2100:magnetic field strength
1836:roentgen equivalent man
1644:magnetic field strength
239:Metric units of measure
233:Realisation (metrology)
3210:centimetre–gram–second
2974:Systems of measurement
2402:Metrication in Jamaica
2397:Metrication in Ireland
2350:
2329:History of metrication
682:cubic metre per second
407:magnetic pole strength
80:systems of measurement
63:
3732:Biblical and Talmudic
3198:metre–kilogram–second
2902:Mathematics and logic
2722:Adrien-Marie Legendre
2639:US Metric Association
2417:Metrication in Sweden
2372:Metrication in Canada
2336:
2271:kilogram des archives
919:magnetic flux density
342:electrical resistance
219:Underlying philosophy
171:System of measurement
22:
2887:Geography and places
2882:Culture and the arts
2710:Pierre-Simon Laplace
2698:Marquis de Condorcet
2523:History of the metre
2392:Metrication in India
2377:Metrication in Chile
2337:Countries using the
2163:potential difference
2016:potential difference
1888:electric conductance
709:radioactive activity
687:volumetric flow rate
512:radioactive activity
363:potential difference
122:improve this section
46:, and an electrical
3845:Outlines of society
2728:James Clerk Maxwell
2647:(Canada, 1971–1985)
2641:(USA, 1916–current)
2470:MKS system of units
2412:Metrication in Peru
2349:systems as of 2019.
2079:kinematic viscosity
1665:electric resistance
1533:amount of substance
1120:amount of substance
3204:metre–tonne–second
3000:UK imperial system
2897:History and events
2892:Health and fitness
2864:Knowledge outlines
2828:Metric conversions
2351:
2267:Metre des archives
1250:kilometre per hour
1162:catalytic activity
554:luminous intensity
64:
3827:
3826:
3715:
3714:
3179:
3178:
3170:Foot–pound–second
3110:
3109:
3087:Heaviside–Lorentz
2940:
2939:
2875:General reference
2651:Metrication Board
2645:Metric Commission
2299:, a new body the
2295:1875 – Under the
2240:
2239:
1770:angular frequency
1765:radian per second
1728:dynamic viscosity
1360:luminous exposure
444:astronomical unit
158:
157:
150:
84:French Revolution
3857:
3294:Mesures usuelles
3188:
3187:
3119:
3118:
2985:
2984:
2967:
2960:
2953:
2944:
2943:
2857:
2850:
2843:
2834:
2833:
2815:
2814:
2813:
2812:
2806:
2789:
2775:
2673:Thomas Jefferson
2542:Metre Convention
2535:Metre Convention
2511:Mesures usuelles
2443:Thomas Jefferson
1946:square kilometre
1422:angular momentum
1141:angular momentum
638:cubic centimetre
384:electric current
279:electric current
246:
245:
190:Metre Convention
153:
146:
142:
139:
133:
102:
94:
3865:
3864:
3860:
3859:
3858:
3856:
3855:
3854:
3830:
3829:
3828:
3823:
3797:
3771:
3711:
3655:
3609:
3528:
3417:
3220:
3175:
3148:
3106:
3063:
3021:
2976:
2971:
2941:
2936:
2912:People and self
2866:
2861:
2824:
2819:
2818:
2810:
2808:
2804:
2798:
2787:
2776:
2772:
2767:
2755:
2749:
2740:Giovanni Giorgi
2682:
2660:
2635:
2618:
2531:
2519:
2459:
2331:
2256:
2245:
1995:electric charge
1318:luminous energy
622:electric charge
300:electric charge
241:
221:
211:Metric prefixes
201:SI derived unit
182:
154:
143:
137:
134:
119:
103:
92:
50:which measures
37:degrees Celsius
17:
12:
11:
5:
3863:
3853:
3852:
3847:
3842:
3825:
3824:
3822:
3821:
3816:
3811:
3809:Absolute scale
3805:
3803:
3799:
3798:
3796:
3795:
3790:
3785:
3779:
3777:
3773:
3772:
3770:
3769:
3764:
3759:
3754:
3749:
3744:
3739:
3734:
3729:
3723:
3721:
3717:
3716:
3713:
3712:
3710:
3709:
3704:
3699:
3694:
3689:
3684:
3679:
3674:
3669:
3663:
3661:
3657:
3656:
3654:
3653:
3648:
3643:
3638:
3633:
3628:
3623:
3617:
3615:
3611:
3610:
3608:
3607:
3602:
3597:
3592:
3587:
3582:
3577:
3572:
3567:
3562:
3557:
3552:
3547:
3542:
3536:
3534:
3530:
3529:
3527:
3526:
3521:
3516:
3511:
3506:
3501:
3496:
3491:
3486:
3481:
3476:
3471:
3466:
3461:
3456:
3451:
3446:
3441:
3436:
3431:
3425:
3423:
3419:
3418:
3416:
3415:
3410:
3405:
3400:
3395:
3390:
3385:
3380:
3375:
3370:
3365:
3360:
3355:
3350:
3345:
3340:
3335:
3330:
3325:
3320:
3315:
3314:
3313:
3303:
3298:
3297:
3296:
3291:
3281:
3276:
3271:
3270:
3269:
3264:
3254:
3249:
3244:
3239:
3234:
3228:
3226:
3222:
3221:
3219:
3218:
3213:
3207:
3201:
3194:
3192:
3185:
3181:
3180:
3177:
3176:
3174:
3173:
3167:
3162:
3156:
3154:
3150:
3149:
3147:
3146:
3141:
3136:
3131:
3125:
3123:
3116:
3112:
3111:
3108:
3107:
3105:
3104:
3099:
3094:
3089:
3084:
3079:
3073:
3071:
3065:
3064:
3062:
3061:
3055:
3050:
3045:
3040:
3035:
3029:
3027:
3023:
3022:
3020:
3019:
3018:
3017:
3007:
3002:
2997:
2991:
2989:
2982:
2978:
2977:
2970:
2969:
2962:
2955:
2947:
2938:
2937:
2935:
2934:
2929:
2924:
2919:
2914:
2909:
2904:
2899:
2894:
2889:
2884:
2878:
2877:
2871:
2868:
2867:
2860:
2859:
2852:
2845:
2837:
2831:
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2823:
2822:External links
2820:
2817:
2816:
2796:
2769:
2768:
2766:
2763:
2762:
2761:
2759:Imperial units
2751:Main article:
2748:
2745:
2744:
2743:
2737:
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2725:
2719:
2713:
2707:
2704:Pierre MĂ©chain
2701:
2695:
2692:Gabriel Mouton
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2594:European Union
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2578:Sèvres, France
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1625:
1616:
1610:
1609:
1607:
1605:
1603:
1600:
1595:
1589:
1588:
1586:
1584:
1582:
1579:
1574:
1568:
1567:
1565:
1563:
1561:
1558:
1553:
1547:
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1432:
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1427:
1424:
1419:
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1412:
1410:
1407:
1404:
1399:
1393:
1392:
1390:
1388:
1385:
1383:
1378:
1372:
1371:
1369:
1367:
1365:
1362:
1357:
1351:
1350:
1348:
1346:
1344:
1341:
1336:
1330:
1329:
1327:
1325:
1323:
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1315:
1309:
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1306:
1304:
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1299:
1294:
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1287:
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1283:
1281:
1278:
1273:
1267:
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1263:
1261:
1259:
1257:
1252:
1246:
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1241:
1238:
1235:
1230:
1224:
1223:
1221:
1219:
1216:
1211:
1206:
1200:
1199:
1197:
1195:
1190:
1185:
1180:
1174:
1173:
1171:
1169:
1167:
1164:
1159:
1153:
1152:
1150:
1148:
1146:
1143:
1138:
1132:
1131:
1129:
1127:
1125:
1122:
1113:
1111:joule per mole
1107:
1106:
1104:
1102:
1100:
1097:
1092:
1086:
1085:
1082:
1080:
1078:
1075:
1070:
1064:
1063:
1061:
1059:
1056:
1053:
1048:
1042:
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950:
945:
942:
937:
931:
930:
928:
926:
923:
921:
916:
910:
909:
907:
905:
902:
900:
895:
889:
888:
886:
884:
882:
879:
874:
868:
867:
865:
863:
860:
858:
853:
847:
846:
844:
842:
840:
837:
832:
826:
825:
823:
821:
818:
816:
811:
805:
804:
802:
800:
798:
795:
790:
784:
783:
781:
779:
777:
774:
769:
767:degree Celsius
763:
762:
760:
758:
756:
753:
748:
742:
741:
739:
737:
735:
732:
727:
721:
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677:
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670:
667:
662:
656:
655:
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651:
648:
645:
640:
634:
633:
631:
629:
627:
624:
619:
613:
612:
610:
608:
603:
600:
595:
589:
588:
586:
584:
582:
579:
574:
568:
567:
565:
563:
561:
556:
551:
545:
544:
541:
539:
537:
535:
530:
524:
523:
521:
519:
517:
514:
509:
503:
502:
500:
498:
495:
493:
488:
482:
481:
479:
477:
475:
472:
467:
461:
460:
458:
456:
454:
451:
446:
440:
439:
437:
435:
432:
430:
425:
419:
418:
416:
414:
412:
409:
404:
398:
397:
395:
393:
391:
386:
381:
375:
374:
372:
370:
367:
365:
360:
354:
353:
351:
349:
346:
344:
339:
333:
332:
330:
328:
325:
323:
318:
312:
311:
309:
307:
304:
302:
297:
291:
290:
288:
286:
283:
281:
276:
270:
269:
266:
263:
258:
253:
250:
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198:
181:
178:
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174:
156:
155:
106:
104:
97:
91:
88:
66:The following
35:calibrated in
27:calibrated in
15:
9:
6:
4:
3:
2:
3862:
3851:
3848:
3846:
3843:
3841:
3840:Metric system
3838:
3837:
3835:
3820:
3817:
3815:
3812:
3810:
3807:
3806:
3804:
3800:
3794:
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3781:
3780:
3778:
3776:List articles
3774:
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3660:South America
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3627:
3624:
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3614:North America
3612:
3606:
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3598:
3596:
3595:South African
3593:
3591:
3588:
3586:
3583:
3581:
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3576:
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3571:
3568:
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3497:
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3442:
3440:
3437:
3435:
3432:
3430:
3427:
3426:
3424:
3420:
3414:
3411:
3409:
3406:
3404:
3401:
3399:
3396:
3394:
3391:
3389:
3386:
3384:
3381:
3379:
3376:
3374:
3371:
3369:
3366:
3364:
3361:
3359:
3356:
3354:
3351:
3349:
3346:
3344:
3343:Luxembourgian
3341:
3339:
3336:
3334:
3331:
3329:
3326:
3324:
3321:
3319:
3316:
3312:
3309:
3308:
3307:
3304:
3302:
3299:
3295:
3292:
3290:
3287:
3286:
3285:
3282:
3280:
3277:
3275:
3272:
3268:
3265:
3263:
3260:
3259:
3258:
3255:
3253:
3250:
3248:
3245:
3243:
3240:
3238:
3235:
3233:
3230:
3229:
3227:
3223:
3217:
3216:gravitational
3214:
3211:
3208:
3205:
3202:
3199:
3196:
3195:
3193:
3189:
3186:
3182:
3171:
3168:
3166:
3163:
3161:
3158:
3157:
3155:
3151:
3145:
3142:
3140:
3137:
3135:
3132:
3130:
3127:
3126:
3124:
3120:
3117:
3113:
3103:
3100:
3098:
3095:
3093:
3090:
3088:
3085:
3083:
3080:
3078:
3075:
3074:
3072:
3070:
3066:
3059:
3056:
3054:
3051:
3049:
3046:
3044:
3041:
3039:
3036:
3034:
3033:Apothecaries'
3031:
3030:
3028:
3024:
3016:
3013:
3012:
3011:
3008:
3006:
3003:
3001:
2998:
2996:
2993:
2992:
2990:
2986:
2983:
2979:
2975:
2968:
2963:
2961:
2956:
2954:
2949:
2948:
2945:
2933:
2930:
2928:
2925:
2923:
2920:
2918:
2915:
2913:
2910:
2908:
2905:
2903:
2900:
2898:
2895:
2893:
2890:
2888:
2885:
2883:
2880:
2879:
2876:
2873:
2872:
2869:
2865:
2858:
2853:
2851:
2846:
2844:
2839:
2838:
2835:
2829:
2826:
2825:
2803:
2799:
2797:92-822-2213-6
2793:
2786:
2785:
2780:
2774:
2770:
2760:
2757:
2756:
2754:
2741:
2738:
2735:
2732:
2729:
2726:
2723:
2720:
2717:
2714:
2711:
2708:
2705:
2702:
2699:
2696:
2693:
2690:
2687:
2684:
2683:
2674:
2670:
2667:
2666:
2662:
2661:
2652:
2649:
2646:
2643:
2640:
2637:
2636:
2627:
2623:
2620:
2619:
2611:
2610:ISO/IEC 80000
2608:
2606:
2603:
2602:
2601:
2599:
2595:
2587:
2583:
2579:
2575:
2571:
2567:
2564:
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2524:
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2520:
2512:
2509:
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2507:
2501:
2497:
2493:
2490:
2487:
2483:
2480:
2477:
2474:
2471:
2468:
2467:
2466:
2464:
2450:
2447:
2444:
2440:
2437:
2436:
2435:
2432:
2428:
2425:
2424:
2423:
2420:
2418:
2415:
2413:
2410:
2408:
2405:
2403:
2400:
2398:
2395:
2393:
2390:
2388:
2385:
2383:
2380:
2378:
2375:
2373:
2370:
2368:
2365:
2363:
2360:
2359:
2358:
2356:
2348:
2344:
2340:
2335:
2323:
2319:
2315:
2311:
2308:
2305:
2302:
2298:
2294:
2291:
2287:
2283:
2279:
2276:
2275:metric system
2272:
2268:
2264:
2261:
2260:
2259:
2251:
2249:
2236:
2234:
2232:
2229:
2227:
2226:magnetic flux
2224:
2222:
2219:
2218:
2215:
2213:
2211:
2208:
2206:
2203:
2201:
2198:
2197:
2194:
2192:
2190:
2187:
2185:
2182:
2180:
2177:
2176:
2173:
2171:
2169:
2166:
2164:
2161:
2159:
2156:
2155:
2152:
2149:
2147:
2145:
2143:
2140:
2138:
2135:
2134:
2131:
2129:
2127:
2124:
2122:
2119:
2117:
2114:
2113:
2110:
2108:
2106:
2103:
2101:
2098:
2096:
2093:
2092:
2089:
2087:
2084:
2082:
2080:
2077:
2075:
2072:
2071:
2068:
2066:
2063:
2061:
2059:
2056:
2054:
2051:
2050:
2047:
2045:
2043:
2040:
2038:
2035:
2033:
2030:
2029:
2026:
2024:
2021:
2019:
2017:
2014:
2012:
2009:
2008:
2005:
2003:
2000:
1998:
1996:
1993:
1991:
1988:
1987:
1984:
1982:
1979:
1976:
1974:
1971:
1969:
1966:
1965:
1962:
1960:
1957:
1954:
1952:
1949:
1947:
1944:
1943:
1940:
1937:
1935:
1933:
1931:
1928:
1926:
1923:
1922:
1919:
1917:
1915:
1912:
1910:
1907:
1905:
1902:
1901:
1898:
1896:
1894:
1891:
1889:
1886:
1884:
1881:
1880:
1877:
1875:
1873:
1870:
1868:
1865:
1863:
1860:
1858:
1855:
1854:
1851:
1849:
1846:
1844:
1842:
1839:
1837:
1834:
1833:
1830:
1828:
1825:
1823:
1821:
1817:
1813:
1810:
1808:
1805:
1804:
1801:
1798:
1796:
1794:
1792:
1789:
1787:
1784:
1783:
1780:
1778:
1776:
1773:
1771:
1768:
1766:
1763:
1762:
1759:
1757:
1755:
1752:
1750:
1747:
1745:
1742:
1741:
1738:
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1733:
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1729:
1726:
1724:
1721:
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1645:
1642:
1640:
1637:
1636:
1633:
1631:
1629:
1626:
1624:
1620:
1617:
1615:
1614:newton-second
1612:
1611:
1608:
1606:
1604:
1601:
1599:
1596:
1594:
1591:
1590:
1587:
1585:
1583:
1580:
1578:
1575:
1573:
1570:
1569:
1566:
1564:
1562:
1559:
1557:
1554:
1552:
1549:
1548:
1545:
1543:
1541:
1539:
1536:
1534:
1531:
1529:
1526:
1525:
1522:
1520:
1518:
1515:
1513:
1510:
1508:
1507:minute of arc
1505:
1504:
1500:
1498:
1496:
1493:
1491:
1488:
1486:
1483:
1482:
1479:
1477:
1474:
1471:
1469:
1466:
1464:
1461:
1460:
1457:
1455:
1452:
1450:
1447:
1445:
1442:
1440:
1437:
1436:
1433:
1431:
1428:
1425:
1423:
1420:
1417:
1416:
1413:
1411:
1408:
1405:
1403:
1400:
1398:
1395:
1394:
1391:
1389:
1386:
1384:
1382:
1381:magnetic flux
1379:
1377:
1374:
1373:
1370:
1368:
1366:
1363:
1361:
1358:
1356:
1353:
1352:
1349:
1347:
1345:
1342:
1340:
1337:
1335:
1332:
1331:
1328:
1326:
1324:
1321:
1319:
1316:
1314:
1311:
1310:
1307:
1305:
1303:
1300:
1298:
1297:luminous flux
1295:
1293:
1290:
1289:
1286:
1284:
1282:
1279:
1277:
1274:
1272:
1269:
1268:
1264:
1262:
1260:
1258:
1256:
1253:
1251:
1248:
1247:
1244:
1242:
1239:
1236:
1234:
1231:
1229:
1226:
1225:
1222:
1220:
1217:
1215:
1212:
1210:
1207:
1205:
1202:
1201:
1198:
1196:
1194:
1191:
1189:
1186:
1184:
1181:
1179:
1176:
1175:
1172:
1170:
1168:
1165:
1163:
1160:
1158:
1155:
1154:
1151:
1149:
1147:
1144:
1142:
1139:
1137:
1134:
1133:
1130:
1128:
1126:
1123:
1121:
1117:
1114:
1112:
1109:
1108:
1105:
1103:
1101:
1098:
1096:
1093:
1091:
1088:
1087:
1083:
1081:
1079:
1076:
1074:
1071:
1069:
1066:
1065:
1062:
1060:
1057:
1054:
1052:
1049:
1047:
1044:
1043:
1040:
1038:
1036:
1033:
1031:
1028:
1026:
1023:
1022:
1019:
1016:
1014:
1011:
1009:
1006:
1004:
1001:
1000:
997:
995:
993:
990:
988:
987:absorbed dose
985:
983:
980:
979:
976:
974:
971:
969:
967:
965:
962:
960:
957:
956:
953:
951:
949:
946:
943:
941:
938:
936:
933:
932:
929:
927:
924:
922:
920:
917:
915:
912:
911:
908:
906:
903:
901:
899:
896:
894:
891:
890:
887:
885:
883:
880:
878:
875:
873:
870:
869:
866:
864:
861:
859:
857:
854:
852:
849:
848:
845:
843:
841:
838:
836:
833:
831:
828:
827:
824:
822:
819:
817:
815:
812:
810:
807:
806:
803:
801:
799:
796:
794:
791:
789:
788:degree of arc
786:
785:
782:
780:
778:
775:
773:
770:
768:
765:
764:
761:
759:
757:
754:
752:
749:
747:
744:
743:
740:
738:
736:
733:
731:
728:
726:
723:
722:
719:
717:
714:
712:
710:
707:
705:
702:
701:
698:
696:
693:
690:
688:
685:
683:
680:
679:
676:
674:
671:
668:
666:
663:
661:
658:
657:
654:
652:
649:
646:
644:
641:
639:
636:
635:
632:
630:
628:
625:
623:
620:
618:
615:
614:
611:
609:
607:
604:
601:
599:
596:
594:
591:
590:
587:
585:
583:
580:
578:
575:
573:
570:
569:
566:
564:
562:
560:
557:
555:
552:
550:
547:
546:
542:
540:
538:
536:
534:
531:
529:
526:
525:
522:
520:
518:
515:
513:
510:
508:
505:
504:
501:
499:
496:
494:
492:
489:
487:
484:
483:
480:
478:
476:
473:
471:
468:
466:
463:
462:
459:
457:
455:
452:
450:
447:
445:
442:
441:
438:
436:
433:
431:
429:
426:
424:
421:
420:
417:
415:
413:
410:
408:
405:
403:
400:
399:
396:
394:
392:
390:
387:
385:
382:
380:
377:
376:
373:
371:
368:
366:
364:
361:
359:
356:
355:
352:
350:
347:
345:
343:
340:
338:
335:
334:
331:
329:
326:
324:
322:
319:
317:
314:
313:
310:
308:
305:
303:
301:
298:
296:
293:
292:
289:
287:
284:
282:
280:
277:
275:
272:
271:
267:
264:
262:
259:
257:
254:
251:
248:
247:
244:
234:
231:
229:
226:
225:
224:
212:
209:
207:
204:
202:
199:
197:
194:
193:
191:
187:
184:
183:
172:
169:
168:
166:
163:
162:
161:
152:
149:
141:
131:
127:
123:
117:
116:
112:
107:This section
105:
101:
96:
95:
87:
85:
81:
77:
76:
75:Metric system
71:
69:
61:
57:
53:
49:
45:
42:
38:
34:
30:
26:
21:
3757:Mesopotamian
3651:Puerto Rican
3133:
3048:Astronomical
2809:, retrieved
2783:
2773:
2686:Simon Stevin
2663:
2591:
2573:
2562:
2551:
2532:
2505:
2460:
2352:
2347:US customary
2270:
2266:
2257:
2246:
1968:square metre
1871:
1866:
1593:newton-metre
1537:
1448:
1402:acceleration
1313:lumen second
1213:
1192:
1187:
1136:joule-second
972:
947:
898:acceleration
830:electronvolt
605:
558:
402:ampere-meter
388:
265:Other metric
242:
222:
196:SI base unit
159:
144:
135:
120:Please help
108:
73:
72:
65:
25:tape measure
3621:Costa Rican
3585:Seychellois
3494:Singaporean
3289:Traditional
3144:Metrication
3082:Geometrised
3038:Avoirdupois
2742:(1871–1950)
2736:(1824–1907)
2730:(1831–1879)
2724:(1753–1834)
2718:(1749–1822)
2712:(1749–1827)
2706:(1744–1804)
2700:(1743–1794)
2694:(1618–1694)
2688:(1548–1620)
2584:, provides
2502:World Wars.
2355:metrication
2353:History of
2265:1799 – The
2200:watt-second
2037:solid angle
1990:statcoulomb
1791:photon flux
1707:illuminance
1339:illuminance
1183:temperature
877:capacitance
772:temperature
660:cubic metre
268:Non-metric
33:thermometer
29:centimetres
3834:Categories
3707:Venezuelan
3692:Paraguayan
3646:Nicaraguan
3524:Vietnamese
3499:Sri Lankan
3484:Philippine
3444:Indonesian
3368:Portuguese
3262:Winchester
3165:Comparison
3115:Background
3053:Electrical
2811:2021-12-16
2765:References
2282:centimetre
1820:gamma rays
1355:lux second
1030:inductance
593:centimetre
321:inductance
48:multimeter
3702:Uruguayan
3687:Colombian
3677:Brazilian
3667:Argentine
3605:Tanzanian
3575:Mauritian
3545:Ethiopian
3509:Taiwanese
3479:Pakistani
3459:Mongolian
3434:Cambodian
3353:Norwegian
3323:Icelandic
3318:Hungarian
3311:Byzantine
3267:Exchequer
3015:Hong Kong
2592:Both the
2586:metrology
2058:luminance
2032:steradian
1930:luminance
1872:Base unit
1867:Base unit
1538:Base unit
1463:microgram
1449:Base unit
1214:Base unit
1193:Base unit
1188:Base unit
1051:frequency
973:Base unit
948:Base unit
606:Base unit
577:luminance
559:Base unit
533:luminance
507:becquerel
428:luminance
389:Base unit
295:abcoulomb
249:Unit name
138:July 2019
109:does not
3850:Outlines
3788:Obsolete
3783:Humorous
3737:Egyptian
3697:Peruvian
3672:Bolivian
3636:Honduran
3600:Tunisian
3580:Moroccan
3570:Malagasy
3555:Eritrean
3550:Egyptian
3540:Algerian
3469:Nepalese
3449:Japanese
3383:Scottish
3373:Romanian
3274:Estonian
3184:Historic
3160:Overview
3129:Overview
3026:Specific
2802:archived
2781:(2006),
2747:See also
2596:and the
2343:imperial
2142:pressure
2011:statvolt
1807:roentgen
1786:rayleigh
1686:pressure
1623:momentum
1255:velocity
1204:kilogram
491:pressure
423:apostilb
274:abampere
261:cgs unit
252:Quantity
41:kilogram
3819:Modulor
3793:Unusual
3762:Persian
3720:Ancient
3682:Chilean
3641:Mexican
3631:Haitian
3560:Guinean
3464:Myanmar
3403:Swedish
3398:Spanish
3388:Serbian
3378:Russian
3358:Ottoman
3348:Maltese
3338:Latvian
3333:Italian
3279:Finnish
3257:English
3237:Cypriot
3232:Cornish
3139:History
3134:Outline
3069:Natural
3010:Chinese
2988:General
2981:Current
1904:sievert
1883:siemens
1639:oersted
1619:impulse
1376:maxwell
1233:density
1003:hectare
746:decibel
617:coulomb
549:candela
316:abhenry
256:SI unit
130:removed
115:sources
68:outline
3814:N-body
3752:Indian
3727:Arabic
3590:Somali
3565:Libyan
3533:Africa
3504:Syrian
3454:Korean
3439:Indian
3429:Afghan
3393:Slovak
3363:Polish
3301:German
3284:French
3247:Danish
3225:Europe
3191:Metric
3122:Metric
3102:Stoney
3092:Planck
3077:Atomic
2794:
2500:Second
2339:metric
2322:kelvin
2318:ampere
2290:second
2205:energy
2074:stokes
1857:second
1816:X-rays
1744:radian
1681:pascal
1598:torque
1572:newton
1485:minute
1444:length
1276:volume
1178:kelvin
1116:energy
1095:energy
856:energy
835:energy
665:volume
643:volume
598:length
465:dalton
449:length
379:ampere
358:abvolt
165:System
3802:Other
3767:Roman
3747:Hindu
3742:Greek
3626:Cuban
3514:Tatar
3474:Omani
3413:Welsh
3408:Swiss
3328:Irish
3306:Greek
3252:Dutch
3242:Czech
3212:(CGS)
3206:(MTS)
3200:(MKS)
3172:(FPS)
3153:UK/US
2805:(PDF)
2788:(PDF)
2675:1790)
2496:First
2221:weber
2184:power
2116:tonne
2095:tesla
2053:stilb
1812:kerma
1749:angle
1723:poise
1577:force
1556:level
1551:neper
1512:angle
1439:metre
1292:lumen
1271:litre
1157:katal
1090:joule
1046:hertz
1025:henry
959:grave
914:gauss
872:farad
814:force
793:angle
751:level
704:curie
486:barye
337:abohm
52:volts
3519:Thai
3489:Pegu
3422:Asia
3060:(US)
3043:Troy
2792:ISBN
2669:text
2568:The
2557:The
2498:and
2345:and
2320:and
2288:and
2286:gram
2269:and
2179:watt
2158:volt
2137:torr
2121:mass
1973:area
1951:area
1925:skot
1862:time
1818:and
1702:phot
1528:mole
1490:time
1468:mass
1209:mass
1118:per
1073:time
1068:hour
1008:area
982:gray
964:mass
940:mass
935:gram
809:dyne
730:time
528:bril
470:mass
113:any
111:cite
60:ohms
58:and
56:amps
44:mass
39:, a
31:, a
1814:of
1660:ohm
1621:or
1334:lux
893:gal
851:erg
725:day
124:by
3836::
2800:,
2463:SI
2441:,
2341:,
2284:,
86:.
54:,
2966:e
2959:t
2952:v
2856:e
2849:t
2842:v
2671:(
2572:(
2561:(
2550:(
2488:.
2324:.
2292:.
2277:.
151:)
145:(
140:)
136:(
132:.
118:.
62:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
