| 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⊕ |
| span | 27,869,641.294838 span | 55,739,282.589676 span | 83,608,923.884514 span | 111,478,565.17935 span | 139,348,206.47419 span | 167,217,847.76903 span | 195,087,489.06387 span | 222,957,130.35871 span | 250,826,771.65354 span | 278,696,412.94838 span | 306,566,054.24322 span | 334,435,695.53806 span | 362,305,336.8329 span | 390,174,978.12773 span | 418,044,619.42257 span | 445,914,260.71741 span | 473,783,902.01225 span | 501,653,543.30709 span | 529,523,184.60192 span | 557,392,825.89676 span | 585,262,467.1916 span | 613,132,108.48644 span | 641,001,749.78128 span | 668,871,391.07612 span | 696,741,032.37095 span | 724,610,673.66579 span | 752,480,314.96063 span | 780,349,956.25547 span | 808,219,597.55031 span | 836,089,238.84514 span | 863,958,880.13998 span | 891,828,521.43482 span | 919,698,162.72966 span | 947,567,804.0245 span | 975,437,445.31934 span | 1,003,307,086.6142 span | 1,031,176,727.909 span | 1,059,046,369.2038 span | 1,086,916,010.4987 span | 1,114,785,651.7935 span | 1,142,655,293.0884 span | 1,170,524,934.3832 span | 1,198,394,575.678 span | 1,226,264,216.9729 span | 1,254,133,858.2677 span | 1,282,003,499.5626 span | 1,309,873,140.8574 span | 1,337,742,782.1522 span | 1,365,612,423.4471 span | 1,393,482,064.7419 span | 1,421,351,706.0367 span | 1,449,221,347.3316 span | 1,477,090,988.6264 span | 1,504,960,629.9213 span | 1,532,830,271.2161 span | 1,560,699,912.5109 span | 1,588,569,553.8058 span | 1,616,439,195.1006 span | 1,644,308,836.3955 span | 1,672,178,477.6903 span | 1,700,048,118.9851 span | 1,727,917,760.28 span | 1,755,787,401.5748 span | 1,783,657,042.8696 span | 1,811,526,684.1645 span | 1,839,396,325.4593 span | 1,867,265,966.7542 span | 1,895,135,608.049 span | 1,923,005,249.3438 span | 1,950,874,890.6387 span | 1,978,744,531.9335 span | 2,006,614,173.2283 span | 2,034,483,814.5232 span | 2,062,353,455.818 span | 2,090,223,097.1129 span | 2,118,092,738.4077 span | 2,145,962,379.7025 span | 2,173,832,020.9974 span | 2,201,701,662.2922 span | 2,229,571,303.5871 span | 2,257,440,944.8819 span | 2,285,310,586.1767 span | 2,313,180,227.4716 span | 2,341,049,868.7664 span | 2,368,919,510.0612 span | 2,396,789,151.3561 span | 2,424,658,792.6509 span | 2,452,528,433.9458 span | 2,480,398,075.2406 span | 2,508,267,716.5354 span | 2,536,137,357.8303 span | 2,564,006,999.1251 span | 2,591,876,640.4199 span | 2,619,746,281.7148 span | 2,647,615,923.0096 span | 2,675,485,564.3045 span | 2,703,355,205.5993 span | 2,731,224,846.8941 span | 2,759,094,488.189 span | 2,786,964,129.4838 span |
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⊕.
| 1 earth radius ≈ 27869641.294838 spans | 4 earth radius ≈ 111478565.17935 spans |
| 1.5 earth radius ≈ 41804461.942257 spans | 4.5 earth radius ≈ 125413385.82677 spans |
| 2 earth radius ≈ 55739282.589676 spans | 5 earth radius ≈ 139348206.47419 spans |
| 2.5 earth radius ≈ 69674103.237095 spans | 5.5 earth radius ≈ 153283027.12161 spans |
| 3 earth radius ≈ 83608923.884514 spans | 6 earth radius ≈ 167217847.76903 spans |
A span is the distance measured by a human hand, from the tip of the thumb to the tip of the little finger. In ancient times, a span was considered to be half a cubit. Sometimes the distinction is made between the great span (thumb to little finger) and little span (index finger to little finger).
| 1 spans ≈ 3.5881337309685E-8 earth radius | 4 spans ≈ 1.4352534923874E-7 earth radius |
| 1.5 spans ≈ 5.3822005964527E-8 earth radius | 4.5 spans ≈ 1.6146601789358E-7 earth radius |
| 2 spans ≈ 7.1762674619369E-8 earth radius | 5 spans ≈ 1.7940668654842E-7 earth radius |
| 2.5 spans ≈ 8.9703343274211E-8 earth radius | 5.5 spans ≈ 1.9734735520326E-7 earth radius |
| 3 spans ≈ 1.0764401192905E-7 earth radius | 6 spans ≈ 2.1528802385811E-7 earth radius |
| 1 earth radius ≈ 27,869,641.294838 spans |
| 1 spans ≈ 3.5881337309685 × 10-8 earth radius |