| 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⊕ |
| fermtometer | 6.371 × 1021 fm | 1.2742 × 1022 fm | 1.9113 × 1022 fm | 2.5484 × 1022 fm | 3.1855 × 1022 fm | 3.8226 × 1022 fm | 4.4597 × 1022 fm | 5.0968 × 1022 fm | 5.7339 × 1022 fm | 6.371 × 1022 fm | 7.0081 × 1022 fm | 7.6452 × 1022 fm | 8.2823 × 1022 fm | 8.9194 × 1022 fm | 9.5565 × 1022 fm | 1.01936 × 1023 fm | 1.08307 × 1023 fm | 1.14678 × 1023 fm | 1.21049 × 1023 fm | 1.2742 × 1023 fm | 1.33791 × 1023 fm | 1.40162 × 1023 fm | 1.46533 × 1023 fm | 1.52904 × 1023 fm | 1.59275 × 1023 fm | 1.65646 × 1023 fm | 1.72017 × 1023 fm | 1.78388 × 1023 fm | 1.84759 × 1023 fm | 1.9113 × 1023 fm | 1.97501 × 1023 fm | 2.03872 × 1023 fm | 2.10243 × 1023 fm | 2.16614 × 1023 fm | 2.22985 × 1023 fm | 2.29356 × 1023 fm | 2.35727 × 1023 fm | 2.42098 × 1023 fm | 2.48469 × 1023 fm | 2.5484 × 1023 fm | 2.61211 × 1023 fm | 2.67582 × 1023 fm | 2.73953 × 1023 fm | 2.80324 × 1023 fm | 2.86695 × 1023 fm | 2.93066 × 1023 fm | 2.99437 × 1023 fm | 3.05808 × 1023 fm | 3.12179 × 1023 fm | 3.1855 × 1023 fm | 3.24921 × 1023 fm | 3.31292 × 1023 fm | 3.37663 × 1023 fm | 3.44034 × 1023 fm | 3.50405 × 1023 fm | 3.56776 × 1023 fm | 3.63147 × 1023 fm | 3.69518 × 1023 fm | 3.75889 × 1023 fm | 3.8226 × 1023 fm | 3.88631 × 1023 fm | 3.95002 × 1023 fm | 4.01373 × 1023 fm | 4.07744 × 1023 fm | 4.14115 × 1023 fm | 4.20486 × 1023 fm | 4.26857 × 1023 fm | 4.33228 × 1023 fm | 4.39599 × 1023 fm | 4.4597 × 1023 fm | 4.52341 × 1023 fm | 4.58712 × 1023 fm | 4.65083 × 1023 fm | 4.71454 × 1023 fm | 4.77825 × 1023 fm | 4.84196 × 1023 fm | 4.90567 × 1023 fm | 4.96938 × 1023 fm | 5.03309 × 1023 fm | 5.0968 × 1023 fm | 5.16051 × 1023 fm | 5.22422 × 1023 fm | 5.28793 × 1023 fm | 5.35164 × 1023 fm | 5.41535 × 1023 fm | 5.47906 × 1023 fm | 5.54277 × 1023 fm | 5.60648 × 1023 fm | 5.67019 × 1023 fm | 5.7339 × 1023 fm | 5.79761 × 1023 fm | 5.86132 × 1023 fm | 5.92503 × 1023 fm | 5.98874 × 1023 fm | 6.05245 × 1023 fm | 6.11616 × 1023 fm | 6.17987 × 1023 fm | 6.24358 × 1023 fm | 6.30729 × 1023 fm | 6.371 × 1023 fm |
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 ≈ 6.371E+21 fermtometers | 4 earth radius ≈ 2.5484E+22 fermtometers |
| 1.5 earth radius ≈ 9.5565E+21 fermtometers | 4.5 earth radius ≈ 2.86695E+22 fermtometers |
| 2 earth radius ≈ 1.2742E+22 fermtometers | 5 earth radius ≈ 3.1855E+22 fermtometers |
| 2.5 earth radius ≈ 1.59275E+22 fermtometers | 5.5 earth radius ≈ 3.50405E+22 fermtometers |
| 3 earth radius ≈ 1.9113E+22 fermtometers | 6 earth radius ≈ 3.8226E+22 fermtometers |
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one. This distance can also be called a fermi and was so named in honour of physicist Enrico Fermi, as it is a typical length-scale of nuclear physics.
| 1 fermtometers ≈ 1.5696123057605E-22 earth radius | 4 fermtometers ≈ 6.2784492230419E-22 earth radius |
| 1.5 fermtometers ≈ 2.3544184586407E-22 earth radius | 4.5 fermtometers ≈ 7.0632553759221E-22 earth radius |
| 2 fermtometers ≈ 3.139224611521E-22 earth radius | 5 fermtometers ≈ 7.8480615288024E-22 earth radius |
| 2.5 fermtometers ≈ 3.9240307644012E-22 earth radius | 5.5 fermtometers ≈ 8.6328676816826E-22 earth radius |
| 3 fermtometers ≈ 4.7088369172814E-22 earth radius | 6 fermtometers ≈ 9.4176738345629E-22 earth radius |
| 1 earth radius ≈ 6.371 × 1021 fermtometers |
| 1 fermtometers ≈ 1.5696123057605 × 10-22 earth radius |