Length Units Converter

Coversion factor: 1 km = 0.6213711922 mi

Additional information

Length is a fundamental physical quantity that represents the extent of a one-dimensional space or distance between two points. It is a measurement along a straight line, typically described using units such as meters, feet, inches, and centimeters.

The standard unit of length in the International System of Units (SI) is the meter (m). It is defined as the distance traveled by light in a vacuum during 1/299,792,458 of a second. This definition provides a precise and standardized unit for measuring length in scientific and everyday contexts.

In the US customary system, the main units of length include the inch, foot (12 inches), yard (3 feet), and mile (5,280 feet). These units provide flexibility for measuring length across various scales and applications, catering to both everyday and specialized uses.

Length Conversion Factors

	kilometer	meter	decimeter	centimeter	millimeter	micrometer	nanometer	mile	yard	foot	inch	light year	parsec	astronomical unit	nautical mile	furlong	link	chain	rod	fathom	ell	hand	span	finger	nail	barleycorn	mil	angstrom	arpent	pica	point	twip	aln	ken	shaku	arshin	Planck length	Bohr radius
1 kilometer	1	1000	10000	100000	1000000	1000000000	1000000000000	0.6213711922	1093.6132983	3280.839895	39370.07874	1.057000834e-13	3.240779289e-14	6.684587122e-9	0.5399568035	4.9709695379	4970.9695379	49.709695379	198.83878152	546.80664917	874.89063867	9842.519685	4374.4531934	8748.9063867	17497.812773	118110.23622	39370078.74	10000000000000	17.102787754	236220.47244	2834645.6693	56692913.386	1593.1177314	550.00055	3300.0033	1406.0742407	6.187142499e+37	18897261246258
1 meter	0.001	1	10	100	1000	1000000	1000000000	0.0006213712	1.0936132983	3.280839895	39.37007874	1.057000834e-16	3.240779289e-17	6.684587122e-12	0.0005399568	0.0049709695	4.9709695379	0.0497096954	0.1988387815	0.5468066492	0.8748906387	9.842519685	4.3744531934	8.7489063867	17.497812773	118.11023622	39370.07874	10000000000	0.0171027878	236.22047244	2834.6456693	56692.913386	1.5931177314	0.55000055	3.3000033	1.4060742407	6.187142499e+34	18897261246
1 decimeter	0.0001	0.1	1	10	100	100000	100000000	0.0000621371	0.1093613298	0.3280839895	3.937007874	1.057000834e-17	3.240779289e-18	6.684587122e-13	0.0000539957	0.000497097	0.4970969538	0.0049709695	0.0198838782	0.0546806649	0.0874890639	0.9842519685	0.4374453193	0.8748906387	1.7497812773	11.811023622	3937.007874	1000000000	0.0017102788	23.622047244	283.46456693	5669.2913386	0.1593117731	0.055000055	0.33000033	0.1406074241	6.187142499e+33	1889726124.6
1 centimeter	0.00001	0.01	0.1	1	10	10000	10000000	0.0000062137	0.010936133	0.032808399	0.3937007874	1.057000834e-18	3.240779289e-19	6.684587122e-14	0.0000053996	0.0000497097	0.0497096954	0.000497097	0.0019883878	0.0054680665	0.0087489064	0.0984251969	0.0437445319	0.0874890639	0.1749781277	1.1811023622	393.7007874	100000000	0.0001710279	2.3622047244	28.346456693	566.92913386	0.0159311773	0.0055000055	0.033000033	0.0140607424	6.187142499e+32	188972612.46
1 millimeter	0.000001	0.001	0.01	0.1	1	1000	1000000	6.213711922e-7	0.0010936133	0.0032808399	0.0393700787	1.057000834e-19	3.240779289e-20	6.684587122e-15	5.399568035e-7	0.000004971	0.0049709695	0.0000497097	0.0001988388	0.0005468066	0.0008748906	0.0098425197	0.0043744532	0.0087489064	0.0174978128	0.1181102362	39.37007874	10000000	0.0000171028	0.2362204724	2.8346456693	56.692913386	0.0015931177	0.0005500006	0.0033000033	0.0014060742	6.187142499e+31	18897261.246
1 micrometer	1e-9	0.000001	0.00001	0.0001	0.001	1	1000	6.213711922e-10	0.0000010936	0.0000032808	0.0000393701	1.057000834e-22	3.240779289e-23	6.684587122e-18	5.399568035e-10	4.970969538e-9	0.000004971	4.970969538e-8	1.988387815e-7	5.468066492e-7	8.748906387e-7	0.0000098425	0.0000043745	0.0000087489	0.0000174978	0.0001181102	0.0393700787	10000	1.710278775e-8	0.0002362205	0.0028346457	0.0566929134	0.0000015931	5.5000055e-7	0.0000033	0.0000014061	6.187142499e+28	18897.261246
1 nanometer	1e-12	1e-9	1e-8	1e-7	0.000001	0.001	1	6.213711922e-13	1.093613298e-9	3.280839895e-9	3.937007874e-8	1.057000834e-25	3.240779289e-26	6.684587122e-21	5.399568035e-13	4.970969538e-12	4.970969538e-9	4.970969538e-11	1.988387815e-10	5.468066492e-10	8.748906387e-10	9.842519685e-9	4.374453193e-9	8.748906387e-9	1.749781277e-8	1.181102362e-7	0.0000393701	10	1.710278775e-11	2.362204724e-7	0.0000028346	0.0000566929	1.593117731e-9	5.5000055e-10	3.3000033e-9	1.406074241e-9	6.187142499e+25	18.897261246
1 mile	1.609344	1609.344	16093.44	160934.4	1609344	1609344000	1609344000000	1	1760	5280	63360	1.70107795e-13	5.215528705e-14	1.075780018e-8	0.8689762419	8	8000	80	320	880	1408	15840	7040	14080	28160	190080	63360000	16093440000000	27.524268856	380160	4561920	91238400	2563.8744623	885.14008514	5310.8405108	2262.8571429	9.957240658e+37	30412194003097
1 yard	0.0009144	0.9144	9.144	91.44	914.4	914400	914400000	0.0005681818	1	3	36	9.665215626e-17	2.963368582e-17	6.112386465e-12	0.0004937365	0.0045454545	4.5454545455	0.0454545455	0.1818181818	0.5	0.8	9	4	8	16	108	36000	9144000000	0.0156387891	216	2592	51840	1.4567468536	0.5029205029	3.0175230175	1.2857142857	5.657523101e+34	17279655684
1 foot	0.0003048	0.3048	3.048	30.48	304.8	304800	304800000	0.0001893939	0.3333333333	1	12	3.221738542e-17	9.877895274e-18	2.037462155e-12	0.0001645788	0.0015151515	1.5151515152	0.0151515152	0.0606060606	0.1666666667	0.2666666667	3	1.3333333333	2.6666666667	5.3333333333	36	12000	3048000000	0.0052129297	72	864	17280	0.4855822845	0.1676401676	1.0058410058	0.4285714286	1.885841034e+34	5759885227.9
1 inch	0.0000254	0.0254	0.254	2.54	25.4	25400	25400000	0.0000157828	0.0277777778	0.0833333333	1	2.684782118e-18	8.231579395e-19	1.697885129e-13	0.0000137149	0.0001262626	0.1262626263	0.0012626263	0.0050505051	0.0138888889	0.0222222222	0.25	0.1111111111	0.2222222222	0.4444444444	3	1000	254000000	0.0004344108	6	72	1440	0.0404651904	0.013970014	0.0838200838	0.0357142857	1.571534195e+33	479990435.65
1 light year	9460730472581	9460730472580800	94607304725808000	946073047258080000	9460730472580800000	9.460730473e+21	9.460730473e+24	5878625373184	10346380656803142	31039141970409450	372469703644913400	1	0.3066013938	63241.077084	5108385784331	47029002985469	47029002985468860	470290029854689	1881160119418755	5173190328401575	8277104525442518	93117425911228350	41385522627212600	82771045254425180	165542090508850400	1117409110934740200	372469703644913400000	9.460730473e+25	161804865274171	2234818221869480700	26817818662433767000	536356373248675350000	15072057467868086	5203406963326404	31220441779958420	13302489415889762	5.853488758e+50	1.787818953e+26
1 parsec	30856775814914	30856775814913670	308567758149136700	3085677581491367400	30856775814913670000	3.085677581e+22	3.085677581e+25	19173511576713	33745380375014930	101236141125044850	1214833693500538400	3.2615637772	1	206264.80625	16661326033971	153388092613704	153388092613704350	1533880926137044	6135523704548173	16872690187507476	26996304300011956	303708423375134600	134981521500059800	269963043000119550	539926086000239200	3644501080501615000	1.214833694e+21	3.085677581e+26	527736887547694	7289002161003230000	87468025932038770000	1.749360519e+21	49158476684584456	16971243669446190	101827462016677140	43386917625019220	1.90915269e+51	5.831085538e+26
1 astronomical unit	149597870.7	149597870700	1495978707000	14959787070000	149597870700000	149597870700000000	149597870700000000000	92955807.273	163602220801	490806662402	5889679948819	0.0000158125	0.0000048481	1	80776388.067	743646458.18	743646458184	7436464581.8	29745858327	81801110400	130881776640	1472419987205	654408883202	1308817766404	2617635532808	17669039846457	5889679948818898	1.495978707e+21	2558540631.1	35338079692913	424056956314961	8481139126299214	238327020392	82278911164	493673466983	210345712458	9.255833436e+45	2.826990045e+21
1 nautical mile	1.852	1852	18520	185200	1852000	1852000000	1852000000000	1.150779448	2025.3718285	6076.1154856	72913.385827	1.957565545e-13	6.001923244e-14	1.237985535e-8	1	9.2062355842	9206.2355842	92.062355842	368.24942337	1012.6859143	1620.2974628	18228.346457	8101.4873141	16202.974628	32405.949256	218740.15748	72913385.827	18520000000000	31.674362921	437480.31496	5249763.7795	104995275.59	2950.4540386	1018.6010186	6111.6061116	2604.0494938	1.145858791e+38	34997727828069
1 furlong	0.201168	201.168	2011.68	20116.8	201168	201168000	201168000000	0.125	220	660	7920	2.126347438e-14	6.519410881e-15	1.344725022e-9	0.1086220302	1	1000	10	40	110	176	1980	880	1760	3520	23760	7920000	2011680000000	3.440533607	47520	570240	11404800	320.48430779	110.64251064	663.85506386	282.85714286	1.244655082e+37	3801524250387
1 link	0.000201168	0.201168	2.01168	20.1168	201.168	201168	201168000	0.000125	0.22	0.66	7.92	2.126347438e-17	6.519410881e-18	1.344725022e-12	0.000108622	0.001	1	0.01	0.04	0.11	0.176	1.98	0.88	1.76	3.52	23.76	7920	2011680000	0.0034405336	47.52	570.24	11404.8	0.3204843078	0.1106425106	0.6638550639	0.2828571429	1.244655082e+34	3801524250.4
1 chain	0.0201168	20.1168	201.168	2011.68	20116.8	20116800	20116800000	0.0125	22	66	792	2.126347438e-15	6.519410881e-16	1.344725022e-10	0.010862203	0.1	100	1	4	11	17.6	198	88	176	352	2376	792000	201168000000	0.3440533607	4752	57024	1140480	32.048430779	11.064251064	66.385506386	28.285714286	1.244655082e+36	380152425039
1 rod	0.0050292	5.0292	50.292	502.92	5029.2	5029200	5029200000	0.003125	5.5	16.5	198	5.315868594e-16	1.62985272e-16	3.361812556e-11	0.0027155508	0.025	25	0.25	1	2.75	4.4	49.5	22	44	88	594	198000	50292000000	0.0860133402	1188	14256	285120	8.0121076948	2.7660627661	16.596376596	7.0714285714	3.111637706e+35	95038106260
1 fathom	0.0018288	1.8288	18.288	182.88	1828.8	1828800	1828800000	0.0011363636	2	6	72	1.933043125e-16	5.926737165e-17	1.222477293e-11	0.000987473	0.0090909091	9.0909090909	0.0909090909	0.3636363636	1	1.6	18	8	16	32	216	72000	18288000000	0.0312775782	432	5184	103680	2.9134937072	1.0058410058	6.035046035	2.5714285714	1.13150462e+35	34559311367
1 ell	0.001143	1.143	11.43	114.3	1143	1143000	1143000000	0.0007102273	1.25	3.75	45	1.208151953e-16	3.704210728e-17	7.640483081e-12	0.0006171706	0.0056818182	5.6818181818	0.0568181818	0.2272727273	0.625	1	11.25	5	10	20	135	45000	11430000000	0.0195484864	270	3240	64800	1.820933567	0.6286506287	3.7719037719	1.6071428571	7.071903877e+34	21599569604
1 hand	0.0001016	0.1016	1.016	10.16	101.6	101600	101600000	0.0000631313	0.1111111111	0.3333333333	4	1.073912847e-17	3.292631758e-18	6.791540516e-13	0.0000548596	0.0005050505	0.5050505051	0.0050505051	0.0202020202	0.0555555556	0.0888888889	1	0.4444444444	0.8888888889	1.7777777778	12	4000	1016000000	0.0017376432	24	288	5760	0.1618607615	0.0558800559	0.3352803353	0.1428571429	6.286136779e+33	1919961742.6
1 span	0.0002286	0.2286	2.286	22.86	228.6	228600	228600000	0.0001420455	0.25	0.75	9	2.416303907e-17	7.408421456e-18	1.528096616e-12	0.0001234341	0.0011363636	1.1363636364	0.0113636364	0.0454545455	0.125	0.2	2.25	1	2	4	27	9000	2286000000	0.0039096973	54	648	12960	0.3641867134	0.1257301257	0.7543807544	0.3214285714	1.414380775e+34	4319913920.9
1 finger	0.0001143	0.1143	1.143	11.43	114.3	114300	114300000	0.0000710227	0.125	0.375	4.5	1.208151953e-17	3.704210728e-18	7.640483081e-13	0.0000617171	0.0005681818	0.5681818182	0.0056818182	0.0227272727	0.0625	0.1	1.125	0.5	1	2	13.5	4500	1143000000	0.0019548486	27	324	6480	0.1820933567	0.0628650629	0.3771903772	0.1607142857	7.071903877e+33	2159956960.4
1 nail	0.00005715	0.05715	0.5715	5.715	57.15	57150	57150000	0.0000355114	0.0625	0.1875	2.25	6.040759766e-18	1.852105364e-18	3.82024154e-13	0.0000308585	0.0002840909	0.2840909091	0.0028409091	0.0113636364	0.03125	0.05	0.5625	0.25	0.5	1	6.75	2250	571500000	0.0009774243	13.5	162	3240	0.0910466783	0.0314325314	0.1885951886	0.0803571429	3.535951938e+33	1079978480.2
1 barleycorn	0.0000084667	0.0084666667	0.0846666667	0.8466666667	8.4666666667	8466.6666667	8466666.6667	0.0000052609	0.0092592593	0.0277777778	0.3333333333	8.949273728e-19	2.743859798e-19	5.659617097e-14	0.0000045716	0.0000420875	0.0420875421	0.0004208754	0.0016835017	0.0046296296	0.0074074074	0.0833333333	0.037037037	0.0740740741	0.1481481481	1	333.33333333	84666666.667	0.0001448036	2	24	480	0.0134883968	0.0046566713	0.0279400279	0.0119047619	5.238447316e+32	159996811.88
1 mil	2.54e-8	0.0000254	0.000254	0.00254	0.0254	25.4	25400	1.578282828e-8	0.0000277778	0.0000833333	0.001	2.684782118e-21	8.231579395e-22	1.697885129e-16	1.371490281e-8	1.262626263e-7	0.0001262626	0.0000012626	0.0000050505	0.0000138889	0.0000222222	0.00025	0.0001111111	0.0002222222	0.0004444444	0.003	1	254000	4.34410809e-7	0.006	0.072	1.44	0.0000404652	0.00001397	0.0000838201	0.0000357143	1.571534195e+30	479990.43565
1 angstrom	1e-13	1e-10	1e-9	1e-8	1e-7	0.0001	0.1	6.213711922e-14	1.093613298e-10	3.280839895e-10	3.937007874e-9	1.057000834e-26	3.240779289e-27	6.684587122e-22	5.399568035e-14	4.970969538e-13	4.970969538e-10	4.970969538e-12	1.988387815e-11	5.468066492e-11	8.748906387e-11	9.842519685e-10	4.374453193e-10	8.748906387e-10	1.749781277e-9	1.181102362e-8	0.000003937	1	1.710278775e-12	2.362204724e-8	2.834645669e-7	0.0000056693	1.593117731e-10	5.5000055e-11	3.3000033e-10	1.406074241e-10	6.187142499e+24	1.8897261246
1 arpent	0.05847	58.47	584.7	5847	58470	58470000	58470000000	0.0363315736	63.943569554	191.83070866	2301.9685039	6.180283877e-15	1.894883651e-15	3.90847809e-10	0.0315712743	0.2906525889	290.65258888	2.9065258888	11.626103555	31.971784777	51.154855643	575.49212598	255.77427822	511.54855643	1023.0971129	6905.9055118	2301968.5039	584700000000	1	13811.811024	165741.73228	3314834.6457	93.149593755	32.158532159	192.95119295	82.213160855	3.617622219e+36	1104922865069
1 pica	0.0000042333	0.0042333333	0.0423333333	0.4233333333	4.2333333333	4233.3333333	4233333.3333	0.0000026305	0.0046296296	0.0138888889	0.1666666667	4.474636864e-19	1.371929899e-19	2.829808548e-14	0.0000022858	0.0000210438	0.021043771	0.0002104377	0.0008417508	0.0023148148	0.0037037037	0.0416666667	0.0185185185	0.037037037	0.0740740741	0.5	166.66666667	42333333.333	0.0000724018	1	12	240	0.0067441984	0.0023283357	0.013970014	0.005952381	2.619223658e+32	79998405.942
1 point	3.527777778e-7	0.0003527778	0.0035277778	0.0352777778	0.3527777778	352.77777778	352777.77778	2.192059484e-7	0.0003858025	0.0011574074	0.0138888889	3.728864053e-20	1.143274916e-20	2.35817379e-15	1.904847612e-7	0.0000017536	0.0017536476	0.0000175365	0.0000701459	0.0001929012	0.000308642	0.0034722222	0.0015432099	0.0030864198	0.0061728395	0.0416666667	13.888888889	3527777.7778	0.0000060335	0.0833333333	1	20	0.0005620165	0.000194028	0.0011641678	0.0004960317	2.182686382e+31	6666533.8285
1 twip	1.763888889e-8	0.0000176389	0.0001763889	0.0017638889	0.0176388889	17.638888889	17638.888889	1.096029742e-8	0.0000192901	0.0000578704	0.0006944444	1.864432027e-21	5.71637458e-22	1.179086895e-16	9.524238061e-9	8.768237935e-8	0.0000876824	8.768237935e-7	0.0000035073	0.0000096451	0.0000154321	0.0001736111	0.0000771605	0.000154321	0.000308642	0.0020833333	0.6944444444	176388.88889	3.016741729e-7	0.0041666667	0.05	1	0.0000281008	0.0000097014	0.0000582084	0.0000248016	1.091343191e+30	333326.69143
1 aln	0.0006277	0.6277	6.277	62.77	627.7	627700	627700000	0.0003900347	0.6864610674	2.0593832021	24.712598425	6.634794235e-17	2.03423716e-17	4.195915337e-12	0.0003389309	0.0031202776	3.1202775789	0.0312027758	0.1248111032	0.3432305337	0.5491688539	6.1781496063	2.7458442695	5.4916885389	10.983377078	74.137795276	24712.598425	6277000000	0.0107354199	148.27559055	1779.3070866	35586.141732	1	0.3452353452	2.0714120714	0.8825928009	3.883669347e+34	11861810884
1 ken	0.00181818	1.81818	18.1818	181.818	1818.18	1818180	1818180000	0.0011297647	1.9883858268	5.9651574803	71.581889764	1.921817776e-16	5.892320088e-17	1.215378261e-11	0.0009817387	0.0090381174	9.0381173944	0.0903811739	0.3615246958	0.9941929134	1.5907086614	17.895472441	7.9535433071	15.907086614	31.814173228	214.74566929	71581.889764	18181800000	0.0310959466	429.49133858	5153.896063	103077.92126	2.8965747969	1	6	2.556496063	1.124933875e+35	34358622453
1 shaku	0.00030303	0.30303	3.0303	30.303	303.03	303030	303030000	0.0001882941	0.3313976378	0.9941929134	11.930314961	3.203029627e-17	9.820533481e-18	2.025630436e-12	0.0001636231	0.0015063529	1.5063528991	0.015063529	0.060254116	0.1656988189	0.2651181102	2.9825787402	1.3255905512	2.6511811024	5.3023622047	35.790944882	11930.314961	3030300000	0.0051826578	71.581889764	858.98267717	17179.653543	0.4827624661	0.1666666667	1	0.4260826772	1.874889792e+34	5726437075.5
1 arshin	0.0007112	0.7112	7.112	71.12	711.2	711200	711200000	0.0004419192	0.7777777778	2.3333333333	28	7.517389932e-17	2.304842231e-17	4.754078361e-12	0.0003840173	0.0035353535	3.5353535354	0.0353535354	0.1414141414	0.3888888889	0.6222222222	7	3.1111111111	6.2222222222	12.444444444	84	28000	7112000000	0.0121635027	168	2016	40320	1.1330253306	0.3911603912	2.346962347	1	4.400295745e+34	13439732198
1 Planck length	1.616255e-38	1.616255e-35	1.616255e-34	1.616255e-33	1.616255e-32	1.616255e-29	1.616255e-26	1.004294296e-38	1.767557962e-35	5.302673885e-35	6.363208661e-34	1.708382883e-51	5.23792573e-52	1.080399736e-46	8.727078834e-39	8.03435437e-38	8.03435437e-35	8.03435437e-37	3.213741748e-36	8.837789808e-36	1.414046369e-35	1.590802165e-34	7.070231846e-35	1.414046369e-34	2.828092738e-34	1.908962598e-33	6.363208661e-31	1.616255e-25	2.764246622e-37	3.817925197e-33	4.581510236e-32	9.163020472e-31	2.574884499e-35	8.889411389e-36	5.333646834e-35	2.272574522e-35	1	3.054279298e-25
1 Bohr radius	5.291772109e-14	5.291772109e-11	5.291772109e-10	5.291772109e-9	5.291772109e-8	0.0000529177	0.0529177211	3.288154744e-14	5.78715235e-11	1.736145705e-10	2.083374846e-9	5.593407533e-27	1.714946546e-27	3.537331169e-22	2.857328353e-14	2.630523796e-13	2.630523796e-10	2.630523796e-12	1.052209518e-11	2.893576175e-11	4.62972188e-11	5.208437115e-10	2.31486094e-10	4.62972188e-10	9.25944376e-10	6.250124538e-9	0.0000020834	0.5291772109	9.050405522e-13	1.250024908e-8	1.500029889e-7	0.0000030001	8.430415977e-11	2.91047757e-11	1.746286542e-10	7.44062445e-11	3.274094811e+24	1

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References: National Institute of Standards and Technology (NIST). “SI Units - Length”. https://www.nist.gov/pml/owm/si-units-length. Bureau International des Poids et Mesures (BIPM). “The International System of Units (SI)”. https://www.bipm.org/en/measurement-units/.