foot, metric | 1 mf | 2 mf | 3 mf | 4 mf | 5 mf | 6 mf | 7 mf | 8 mf | 9 mf | 10 mf | 11 mf | 12 mf | 13 mf | 14 mf | 15 mf | 16 mf | 17 mf | 18 mf | 19 mf | 20 mf | 21 mf | 22 mf | 23 mf | 24 mf | 25 mf | 26 mf | 27 mf | 28 mf | 29 mf | 30 mf | 31 mf | 32 mf | 33 mf | 34 mf | 35 mf | 36 mf | 37 mf | 38 mf | 39 mf | 40 mf | 41 mf | 42 mf | 43 mf | 44 mf | 45 mf | 46 mf | 47 mf | 48 mf | 49 mf | 50 mf | 51 mf | 52 mf | 53 mf | 54 mf | 55 mf | 56 mf | 57 mf | 58 mf | 59 mf | 60 mf | 61 mf | 62 mf | 63 mf | 64 mf | 65 mf | 66 mf | 67 mf | 68 mf | 69 mf | 70 mf | 71 mf | 72 mf | 73 mf | 74 mf | 75 mf | 76 mf | 77 mf | 78 mf | 79 mf | 80 mf | 81 mf | 82 mf | 83 mf | 84 mf | 85 mf | 86 mf | 87 mf | 88 mf | 89 mf | 90 mf | 91 mf | 92 mf | 93 mf | 94 mf | 95 mf | 96 mf | 97 mf | 98 mf | 99 mf | 100 mf |
earth radius | 4.9635499296814 × 10-8R⊕ | 9.9270998593627 × 10-8R⊕ | 1.4890649789044 × 10-7R⊕ | 1.9854199718725 × 10-7R⊕ | 2.4817749648407 × 10-7R⊕ | 2.9781299578088 × 10-7R⊕ | 3.474484950777 × 10-7R⊕ | 3.9708399437451 × 10-7R⊕ | 4.4671949367132 × 10-7R⊕ | 4.9635499296814 × 10-7R⊕ | 5.4599049226495 × 10-7R⊕ | 5.9562599156176 × 10-7R⊕ | 6.4526149085858 × 10-7R⊕ | 6.9489699015539 × 10-7R⊕ | 7.4453248945221 × 10-7R⊕ | 7.9416798874902 × 10-7R⊕ | 8.4380348804583 × 10-7R⊕ | 8.9343898734265 × 10-7R⊕ | 9.4307448663946 × 10-7R⊕ | 9.9270998593627 × 10-7R⊕ | 1.0423454852331 × 10-6R⊕ | 1.0919809845299 × 10-6R⊕ | 1.1416164838267 × 10-6R⊕ | 1.1912519831235 × 10-6R⊕ | 1.2408874824203 × 10-6R⊕ | 1.2905229817172 × 10-6R⊕ | 1.340158481014 × 10-6R⊕ | 1.3897939803108 × 10-6R⊕ | 1.4394294796076 × 10-6R⊕ | 1.4890649789044 × 10-6R⊕ | 1.5387004782012 × 10-6R⊕ | 1.588335977498 × 10-6R⊕ | 1.6379714767949 × 10-6R⊕ | 1.6876069760917 × 10-6R⊕ | 1.7372424753885 × 10-6R⊕ | 1.7868779746853 × 10-6R⊕ | 1.8365134739821 × 10-6R⊕ | 1.8861489732789 × 10-6R⊕ | 1.9357844725757 × 10-6R⊕ | 1.9854199718725 × 10-6R⊕ | 2.0350554711694 × 10-6R⊕ | 2.0846909704662 × 10-6R⊕ | 2.134326469763 × 10-6R⊕ | 2.1839619690598 × 10-6R⊕ | 2.2335974683566 × 10-6R⊕ | 2.2832329676534 × 10-6R⊕ | 2.3328684669502 × 10-6R⊕ | 2.3825039662471 × 10-6R⊕ | 2.4321394655439 × 10-6R⊕ | 2.4817749648407 × 10-6R⊕ | 2.5314104641375 × 10-6R⊕ | 2.5810459634343 × 10-6R⊕ | 2.6306814627311 × 10-6R⊕ | 2.6803169620279 × 10-6R⊕ | 2.7299524613248 × 10-6R⊕ | 2.7795879606216 × 10-6R⊕ | 2.8292234599184 × 10-6R⊕ | 2.8788589592152 × 10-6R⊕ | 2.928494458512 × 10-6R⊕ | 2.9781299578088 × 10-6R⊕ | 3.0277654571056 × 10-6R⊕ | 3.0774009564024 × 10-6R⊕ | 3.1270364556993 × 10-6R⊕ | 3.1766719549961 × 10-6R⊕ | 3.2263074542929 × 10-6R⊕ | 3.2759429535897 × 10-6R⊕ | 3.3255784528865 × 10-6R⊕ | 3.3752139521833 × 10-6R⊕ | 3.4248494514801 × 10-6R⊕ | 3.474484950777 × 10-6R⊕ | 3.5241204500738 × 10-6R⊕ | 3.5737559493706 × 10-6R⊕ | 3.6233914486674 × 10-6R⊕ | 3.6730269479642 × 10-6R⊕ | 3.722662447261 × 10-6R⊕ | 3.7722979465578 × 10-6R⊕ | 3.8219334458547 × 10-6R⊕ | 3.8715689451515 × 10-6R⊕ | 3.9212044444483 × 10-6R⊕ | 3.9708399437451 × 10-6R⊕ | 4.0204754430419 × 10-6R⊕ | 4.0701109423387 × 10-6R⊕ | 4.1197464416355 × 10-6R⊕ | 4.1693819409323 × 10-6R⊕ | 4.2190174402292 × 10-6R⊕ | 4.268652939526 × 10-6R⊕ | 4.3182884388228 × 10-6R⊕ | 4.3679239381196 × 10-6R⊕ | 4.4175594374164 × 10-6R⊕ | 4.4671949367132 × 10-6R⊕ | 4.51683043601 × 10-6R⊕ | 4.5664659353069 × 10-6R⊕ | 4.6161014346037 × 10-6R⊕ | 4.6657369339005 × 10-6R⊕ | 4.7153724331973 × 10-6R⊕ | 4.7650079324941 × 10-6R⊕ | 4.8146434317909 × 10-6R⊕ | 4.8642789310877 × 10-6R⊕ | 4.9139144303846 × 10-6R⊕ | 4.9635499296814 × 10-6R⊕ |
A metric foot is a nickname for a preferred number length of 3 basic modules (3 M), or 30 centimetres (11.811 in). The 30 cm metric ruler was a similar length to the traditional imperial one-foot ruler. A metric foot is 4.8 millimetres (0.189 in) shorter than an imperial foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric | mf | ≡ √ 1⁄10 m | ≈ 0.31622776602 m | Metric system Non-SI |
feet, metric | earth radius | feet, metric | earth radius |
---|---|---|---|
1 | ≈ 4.9635499296814E-8 | 4 | ≈ 1.9854199718725E-7 |
1.5 | ≈ 7.4453248945221E-8 | 4.5 | ≈ 2.2335974683566E-7 |
2 | ≈ 9.9270998593627E-8 | 5 | ≈ 2.4817749648407E-7 |
2.5 | ≈ 1.2408874824203E-7 | 5.5 | ≈ 2.7299524613248E-7 |
3 | ≈ 1.4890649789044E-7 | 6 | ≈ 2.9781299578088E-7 |
Earth radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R⊕.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
earth radius | R⊕ | ≈ 6,371 km | ≈ 6,371 km | Science - Astronomy (Length) |
earth radius | feet, metric | earth radius | feet, metric |
---|---|---|---|
1 | ≈ 20146870.972731 | 4 | ≈ 80587483.890925 |
1.5 | ≈ 30220306.459097 | 4.5 | ≈ 90660919.377291 |
2 | ≈ 40293741.945463 | 5 | ≈ 100734354.86366 |
2.5 | ≈ 50367177.431828 | 5.5 | ≈ 110807790.35002 |
3 | ≈ 60440612.918194 | 6 | ≈ 120881225.83639 |
feet, metric | earth radius |
---|---|
1 | ≈ 4.9635499296814 × 10-8 |
20,146,870.972731 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |