earth radius | 1 R⊕ | 2 R⊕ | 3 R⊕ | 4 R⊕ | 5 R⊕ | 6 R⊕ | 7 R⊕ | 8 R⊕ | 9 R⊕ | 10 R⊕ | 11 R⊕ | 12 R⊕ | 13 R⊕ | 14 R⊕ | 15 R⊕ | 16 R⊕ | 17 R⊕ | 18 R⊕ | 19 R⊕ | 20 R⊕ | 21 R⊕ | 22 R⊕ | 23 R⊕ | 24 R⊕ | 25 R⊕ | 26 R⊕ | 27 R⊕ | 28 R⊕ | 29 R⊕ | 30 R⊕ | 31 R⊕ | 32 R⊕ | 33 R⊕ | 34 R⊕ | 35 R⊕ | 36 R⊕ | 37 R⊕ | 38 R⊕ | 39 R⊕ | 40 R⊕ | 41 R⊕ | 42 R⊕ | 43 R⊕ | 44 R⊕ | 45 R⊕ | 46 R⊕ | 47 R⊕ | 48 R⊕ | 49 R⊕ | 50 R⊕ | 51 R⊕ | 52 R⊕ | 53 R⊕ | 54 R⊕ | 55 R⊕ | 56 R⊕ | 57 R⊕ | 58 R⊕ | 59 R⊕ | 60 R⊕ | 61 R⊕ | 62 R⊕ | 63 R⊕ | 64 R⊕ | 65 R⊕ | 66 R⊕ | 67 R⊕ | 68 R⊕ | 69 R⊕ | 70 R⊕ | 71 R⊕ | 72 R⊕ | 73 R⊕ | 74 R⊕ | 75 R⊕ | 76 R⊕ | 77 R⊕ | 78 R⊕ | 79 R⊕ | 80 R⊕ | 81 R⊕ | 82 R⊕ | 83 R⊕ | 84 R⊕ | 85 R⊕ | 86 R⊕ | 87 R⊕ | 88 R⊕ | 89 R⊕ | 90 R⊕ | 91 R⊕ | 92 R⊕ | 93 R⊕ | 94 R⊕ | 95 R⊕ | 96 R⊕ | 97 R⊕ | 98 R⊕ | 99 R⊕ | 100 R⊕ |
foot, metric | 20,146,870.972731 mf | 40,293,741.945463 mf | 60,440,612.918194 mf | 80,587,483.890925 mf | 100,734,354.86366 mf | 120,881,225.83639 mf | 141,028,096.80912 mf | 161,174,967.78185 mf | 181,321,838.75458 mf | 201,468,709.72731 mf | 221,615,580.70004 mf | 241,762,451.67278 mf | 261,909,322.64551 mf | 282,056,193.61824 mf | 302,203,064.59097 mf | 322,349,935.5637 mf | 342,496,806.53643 mf | 362,643,677.50916 mf | 382,790,548.48189 mf | 402,937,419.45463 mf | 423,084,290.42736 mf | 443,231,161.40009 mf | 463,378,032.37282 mf | 483,524,903.34555 mf | 503,671,774.31828 mf | 523,818,645.29101 mf | 543,965,516.26374 mf | 564,112,387.23648 mf | 584,259,258.20921 mf | 604,406,129.18194 mf | 624,553,000.15467 mf | 644,699,871.1274 mf | 664,846,742.10013 mf | 684,993,613.07286 mf | 705,140,484.0456 mf | 725,287,355.01833 mf | 745,434,225.99106 mf | 765,581,096.96379 mf | 785,727,967.93652 mf | 805,874,838.90925 mf | 826,021,709.88198 mf | 846,168,580.85471 mf | 866,315,451.82745 mf | 886,462,322.80018 mf | 906,609,193.77291 mf | 926,756,064.74564 mf | 946,902,935.71837 mf | 967,049,806.6911 mf | 987,196,677.66383 mf | 1,007,343,548.6366 mf | 1,027,490,419.6093 mf | 1,047,637,290.582 mf | 1,067,784,161.5548 mf | 1,087,931,032.5275 mf | 1,108,077,903.5002 mf | 1,128,224,774.473 mf | 1,148,371,645.4457 mf | 1,168,518,516.4184 mf | 1,188,665,387.3911 mf | 1,208,812,258.3639 mf | 1,228,959,129.3366 mf | 1,249,106,000.3093 mf | 1,269,252,871.2821 mf | 1,289,399,742.2548 mf | 1,309,546,613.2275 mf | 1,329,693,484.2003 mf | 1,349,840,355.173 mf | 1,369,987,226.1457 mf | 1,390,134,097.1185 mf | 1,410,280,968.0912 mf | 1,430,427,839.0639 mf | 1,450,574,710.0367 mf | 1,470,721,581.0094 mf | 1,490,868,451.9821 mf | 1,511,015,322.9548 mf | 1,531,162,193.9276 mf | 1,551,309,064.9003 mf | 1,571,455,935.873 mf | 1,591,602,806.8458 mf | 1,611,749,677.8185 mf | 1,631,896,548.7912 mf | 1,652,043,419.764 mf | 1,672,190,290.7367 mf | 1,692,337,161.7094 mf | 1,712,484,032.6822 mf | 1,732,630,903.6549 mf | 1,752,777,774.6276 mf | 1,772,924,645.6004 mf | 1,793,071,516.5731 mf | 1,813,218,387.5458 mf | 1,833,365,258.5185 mf | 1,853,512,129.4913 mf | 1,873,659,000.464 mf | 1,893,805,871.4367 mf | 1,913,952,742.4095 mf | 1,934,099,613.3822 mf | 1,954,246,484.3549 mf | 1,974,393,355.3277 mf | 1,994,540,226.3004 mf | 2,014,687,097.2731 mf |
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 |
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 | feet, metric |
---|---|
1 | ≈ 20,146,870.972731 |
4.9635499296814 × 10-8 | ≈ 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 …) |