cubit | 1 cubit | 2 cubit | 3 cubit | 4 cubit | 5 cubit | 6 cubit | 7 cubit | 8 cubit | 9 cubit | 10 cubit | 11 cubit | 12 cubit | 13 cubit | 14 cubit | 15 cubit | 16 cubit | 17 cubit | 18 cubit | 19 cubit | 20 cubit | 21 cubit | 22 cubit | 23 cubit | 24 cubit | 25 cubit | 26 cubit | 27 cubit | 28 cubit | 29 cubit | 30 cubit | 31 cubit | 32 cubit | 33 cubit | 34 cubit | 35 cubit | 36 cubit | 37 cubit | 38 cubit | 39 cubit | 40 cubit | 41 cubit | 42 cubit | 43 cubit | 44 cubit | 45 cubit | 46 cubit | 47 cubit | 48 cubit | 49 cubit | 50 cubit | 51 cubit | 52 cubit | 53 cubit | 54 cubit | 55 cubit | 56 cubit | 57 cubit | 58 cubit | 59 cubit | 60 cubit | 61 cubit | 62 cubit | 63 cubit | 64 cubit | 65 cubit | 66 cubit | 67 cubit | 68 cubit | 69 cubit | 70 cubit | 71 cubit | 72 cubit | 73 cubit | 74 cubit | 75 cubit | 76 cubit | 77 cubit | 78 cubit | 79 cubit | 80 cubit | 81 cubit | 82 cubit | 83 cubit | 84 cubit | 85 cubit | 86 cubit | 87 cubit | 88 cubit | 89 cubit | 90 cubit | 91 cubit | 92 cubit | 93 cubit | 94 cubit | 95 cubit | 96 cubit | 97 cubit | 98 cubit | 99 cubit | 100 cubit |
earth radius | 7.8480615288024 × 10-8R⊕ | 1.5696123057605 × 10-7R⊕ | 2.3544184586407 × 10-7R⊕ | 3.139224611521 × 10-7R⊕ | 3.9240307644012 × 10-7R⊕ | 4.7088369172814 × 10-7R⊕ | 5.4936430701617 × 10-7R⊕ | 6.2784492230419 × 10-7R⊕ | 7.0632553759221 × 10-7R⊕ | 7.8480615288024 × 10-7R⊕ | 8.6328676816826 × 10-7R⊕ | 9.4176738345629 × 10-7R⊕ | 1.0202479987443 × 10-6R⊕ | 1.0987286140323 × 10-6R⊕ | 1.1772092293204 × 10-6R⊕ | 1.2556898446084 × 10-6R⊕ | 1.3341704598964 × 10-6R⊕ | 1.4126510751844 × 10-6R⊕ | 1.4911316904725 × 10-6R⊕ | 1.5696123057605 × 10-6R⊕ | 1.6480929210485 × 10-6R⊕ | 1.7265735363365 × 10-6R⊕ | 1.8050541516245 × 10-6R⊕ | 1.8835347669126 × 10-6R⊕ | 1.9620153822006 × 10-6R⊕ | 2.0404959974886 × 10-6R⊕ | 2.1189766127766 × 10-6R⊕ | 2.1974572280647 × 10-6R⊕ | 2.2759378433527 × 10-6R⊕ | 2.3544184586407 × 10-6R⊕ | 2.4328990739287 × 10-6R⊕ | 2.5113796892168 × 10-6R⊕ | 2.5898603045048 × 10-6R⊕ | 2.6683409197928 × 10-6R⊕ | 2.7468215350808 × 10-6R⊕ | 2.8253021503689 × 10-6R⊕ | 2.9037827656569 × 10-6R⊕ | 2.9822633809449 × 10-6R⊕ | 3.0607439962329 × 10-6R⊕ | 3.139224611521 × 10-6R⊕ | 3.217705226809 × 10-6R⊕ | 3.296185842097 × 10-6R⊕ | 3.374666457385 × 10-6R⊕ | 3.453147072673 × 10-6R⊕ | 3.5316276879611 × 10-6R⊕ | 3.6101083032491 × 10-6R⊕ | 3.6885889185371 × 10-6R⊕ | 3.7670695338251 × 10-6R⊕ | 3.8455501491132 × 10-6R⊕ | 3.9240307644012 × 10-6R⊕ | 4.0025113796892 × 10-6R⊕ | 4.0809919949772 × 10-6R⊕ | 4.1594726102653 × 10-6R⊕ | 4.2379532255533 × 10-6R⊕ | 4.3164338408413 × 10-6R⊕ | 4.3949144561293 × 10-6R⊕ | 4.4733950714174 × 10-6R⊕ | 4.5518756867054 × 10-6R⊕ | 4.6303563019934 × 10-6R⊕ | 4.7088369172814 × 10-6R⊕ | 4.7873175325695 × 10-6R⊕ | 4.8657981478575 × 10-6R⊕ | 4.9442787631455 × 10-6R⊕ | 5.0227593784335 × 10-6R⊕ | 5.1012399937216 × 10-6R⊕ | 5.1797206090096 × 10-6R⊕ | 5.2582012242976 × 10-6R⊕ | 5.3366818395856 × 10-6R⊕ | 5.4151624548736 × 10-6R⊕ | 5.4936430701617 × 10-6R⊕ | 5.5721236854497 × 10-6R⊕ | 5.6506043007377 × 10-6R⊕ | 5.7290849160257 × 10-6R⊕ | 5.8075655313138 × 10-6R⊕ | 5.8860461466018 × 10-6R⊕ | 5.9645267618898 × 10-6R⊕ | 6.0430073771778 × 10-6R⊕ | 6.1214879924659 × 10-6R⊕ | 6.1999686077539 × 10-6R⊕ | 6.2784492230419 × 10-6R⊕ | 6.3569298383299 × 10-6R⊕ | 6.435410453618 × 10-6R⊕ | 6.513891068906 × 10-6R⊕ | 6.592371684194 × 10-6R⊕ | 6.670852299482 × 10-6R⊕ | 6.7493329147701 × 10-6R⊕ | 6.8278135300581 × 10-6R⊕ | 6.9062941453461 × 10-6R⊕ | 6.9847747606341 × 10-6R⊕ | 7.0632553759221 × 10-6R⊕ | 7.1417359912102 × 10-6R⊕ | 7.2202166064982 × 10-6R⊕ | 7.2986972217862 × 10-6R⊕ | 7.3771778370742 × 10-6R⊕ | 7.4556584523623 × 10-6R⊕ | 7.5341390676503 × 10-6R⊕ | 7.6126196829383 × 10-6R⊕ | 7.6911002982263 × 10-6R⊕ | 7.7695809135144 × 10-6R⊕ | 7.8480615288024 × 10-6R⊕ |
The cubit is an ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow. Cubits of various lengths were employed in many parts of the world in antiquity, during the Middle Ages and as recently as Early Modern Times. The term is still used in hedge laying, the length of the forearm being frequently used to determine the interval between stakes placed within the hedge.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
cubit | ≡ Distance from fingers to elbow ≈ 18 in | ≈ 0.5 m | Other (Length) |
cubit | earth radius | cubit | earth radius |
---|---|---|---|
1 | ≈ 7.8480615288024E-8 | 4 | ≈ 3.139224611521E-7 |
1.5 | ≈ 1.1772092293204E-7 | 4.5 | ≈ 3.5316276879611E-7 |
2 | ≈ 1.5696123057605E-7 | 5 | ≈ 3.9240307644012E-7 |
2.5 | ≈ 1.9620153822006E-7 | 5.5 | ≈ 4.3164338408413E-7 |
3 | ≈ 2.3544184586407E-7 | 6 | ≈ 4.7088369172814E-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 | cubit | earth radius | cubit |
---|---|---|---|
1 | ≈ 12742000 | 4 | ≈ 50968000 |
1.5 | ≈ 19113000 | 4.5 | ≈ 57339000 |
2 | ≈ 25484000 | 5 | ≈ 63710000 |
2.5 | ≈ 31855000 | 5.5 | ≈ 70081000 |
3 | ≈ 38226000 | 6 | ≈ 76452000 |
cubit | earth radius |
---|---|
1 | ≈ 7.8480615288024 × 10-8 |
12 742 000 | ≈ 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 …) |