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⊕ |
millimeter | 6 371 000 000 mm | 12 742 000 000 mm | 19 113 000 000 mm | 25 484 000 000 mm | 31 855 000 000 mm | 38 226 000 000 mm | 44 597 000 000 mm | 50 968 000 000 mm | 57 339 000 000 mm | 63 710 000 000 mm | 70 081 000 000 mm | 76 452 000 000 mm | 82 823 000 000 mm | 89 194 000 000 mm | 95 565 000 000 mm | 101 936 000 000 mm | 108 307 000 000 mm | 114 678 000 000 mm | 121 049 000 000 mm | 127 420 000 000 mm | 133 791 000 000 mm | 140 162 000 000 mm | 146 533 000 000 mm | 152 904 000 000 mm | 159 275 000 000 mm | 165 646 000 000 mm | 172 017 000 000 mm | 178 388 000 000 mm | 184 759 000 000 mm | 191 130 000 000 mm | 197 501 000 000 mm | 203 872 000 000 mm | 210 243 000 000 mm | 216 614 000 000 mm | 222 985 000 000 mm | 229 356 000 000 mm | 235 727 000 000 mm | 242 098 000 000 mm | 248 469 000 000 mm | 254 840 000 000 mm | 261 211 000 000 mm | 267 582 000 000 mm | 273 953 000 000 mm | 280 324 000 000 mm | 286 695 000 000 mm | 293 066 000 000 mm | 299 437 000 000 mm | 305 808 000 000 mm | 312 179 000 000 mm | 318 550 000 000 mm | 324 921 000 000 mm | 331 292 000 000 mm | 337 663 000 000 mm | 344 034 000 000 mm | 350 405 000 000 mm | 356 776 000 000 mm | 363 147 000 000 mm | 369 518 000 000 mm | 375 889 000 000 mm | 382 260 000 000 mm | 388 631 000 000 mm | 395 002 000 000 mm | 401 373 000 000 mm | 407 744 000 000 mm | 414 115 000 000 mm | 420 486 000 000 mm | 426 857 000 000 mm | 433 228 000 000 mm | 439 599 000 000 mm | 445 970 000 000 mm | 452 341 000 000 mm | 458 712 000 000 mm | 465 083 000 000 mm | 471 454 000 000 mm | 477 825 000 000 mm | 484 196 000 000 mm | 490 567 000 000 mm | 496 938 000 000 mm | 503 309 000 000 mm | 509 680 000 000 mm | 516 051 000 000 mm | 522 422 000 000 mm | 528 793 000 000 mm | 535 164 000 000 mm | 541 535 000 000 mm | 547 906 000 000 mm | 554 277 000 000 mm | 560 648 000 000 mm | 567 019 000 000 mm | 573 390 000 000 mm | 579 761 000 000 mm | 586 132 000 000 mm | 592 503 000 000 mm | 598 874 000 000 mm | 605 245 000 000 mm | 611 616 000 000 mm | 617 987 000 000 mm | 624 358 000 000 mm | 630 729 000 000 mm | 637 100 000 000 mm |
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 | millimeters | earth radius | millimeters |
---|---|---|---|
1 | ≈ 6371000000 | 4 | ≈ 25484000000 |
1.5 | ≈ 9556500000 | 4.5 | ≈ 28669500000 |
2 | ≈ 12742000000 | 5 | ≈ 31855000000 |
2.5 | ≈ 15927500000 | 5.5 | ≈ 35040500000 |
3 | ≈ 19113000000 | 6 | ≈ 38226000000 |
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore there are thousand millimetres in a metre. There are ten millimetres in a centimetre.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
millimeter | mm | ≡ 1×10-3 m ≡ 0.001 m | ≡ 1×10-3 m ≡ 0.001 m | Metric system SI |
millimeters | earth radius | millimeters | earth radius |
---|---|---|---|
1 | ≈ 1.5696123057605E-10 | 4 | ≈ 6.2784492230419E-10 |
1.5 | ≈ 2.3544184586407E-10 | 4.5 | ≈ 7.0632553759221E-10 |
2 | ≈ 3.139224611521E-10 | 5 | ≈ 7.8480615288024E-10 |
2.5 | ≈ 3.9240307644012E-10 | 5.5 | ≈ 8.6328676816826E-10 |
3 | ≈ 4.7088369172814E-10 | 6 | ≈ 9.4176738345629E-10 |
earth radius | millimeters |
---|---|
1 | ≈ 6 371 000 000 |
1.5696123057605 × 10-10 | ≈ 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 …) |