| metric inch | 1 in (metric) | 2 in (metric) | 3 in (metric) | 4 in (metric) | 5 in (metric) | 6 in (metric) | 7 in (metric) | 8 in (metric) | 9 in (metric) | 10 in (metric) | 11 in (metric) | 12 in (metric) | 13 in (metric) | 14 in (metric) | 15 in (metric) | 16 in (metric) | 17 in (metric) | 18 in (metric) | 19 in (metric) | 20 in (metric) | 21 in (metric) | 22 in (metric) | 23 in (metric) | 24 in (metric) | 25 in (metric) | 26 in (metric) | 27 in (metric) | 28 in (metric) | 29 in (metric) | 30 in (metric) | 31 in (metric) | 32 in (metric) | 33 in (metric) | 34 in (metric) | 35 in (metric) | 36 in (metric) | 37 in (metric) | 38 in (metric) | 39 in (metric) | 40 in (metric) | 41 in (metric) | 42 in (metric) | 43 in (metric) | 44 in (metric) | 45 in (metric) | 46 in (metric) | 47 in (metric) | 48 in (metric) | 49 in (metric) | 50 in (metric) | 51 in (metric) | 52 in (metric) | 53 in (metric) | 54 in (metric) | 55 in (metric) | 56 in (metric) | 57 in (metric) | 58 in (metric) | 59 in (metric) | 60 in (metric) | 61 in (metric) | 62 in (metric) | 63 in (metric) | 64 in (metric) | 65 in (metric) | 66 in (metric) | 67 in (metric) | 68 in (metric) | 69 in (metric) | 70 in (metric) | 71 in (metric) | 72 in (metric) | 73 in (metric) | 74 in (metric) | 75 in (metric) | 76 in (metric) | 77 in (metric) | 78 in (metric) | 79 in (metric) | 80 in (metric) | 81 in (metric) | 82 in (metric) | 83 in (metric) | 84 in (metric) | 85 in (metric) | 86 in (metric) | 87 in (metric) | 88 in (metric) | 89 in (metric) | 90 in (metric) | 91 in (metric) | 92 in (metric) | 93 in (metric) | 94 in (metric) | 95 in (metric) | 96 in (metric) | 97 in (metric) | 98 in (metric) | 99 in (metric) | 100 in (metric) |
| earth radius | 6.2784492230419 × 10-11R⊕ | 1.2556898446084 × 10-10R⊕ | 1.8835347669126 × 10-10R⊕ | 2.5113796892168 × 10-10R⊕ | 3.139224611521 × 10-10R⊕ | 3.7670695338251 × 10-10R⊕ | 4.3949144561293 × 10-10R⊕ | 5.0227593784335 × 10-10R⊕ | 5.6506043007377 × 10-10R⊕ | 6.2784492230419 × 10-10R⊕ | 6.9062941453461 × 10-10R⊕ | 7.5341390676503 × 10-10R⊕ | 8.1619839899545 × 10-10R⊕ | 8.7898289122587 × 10-10R⊕ | 9.4176738345629 × 10-10R⊕ | 1.0045518756867 × 10-9R⊕ | 1.0673363679171 × 10-9R⊕ | 1.1301208601475 × 10-9R⊕ | 1.192905352378 × 10-9R⊕ | 1.2556898446084 × 10-9R⊕ | 1.3184743368388 × 10-9R⊕ | 1.3812588290692 × 10-9R⊕ | 1.4440433212996 × 10-9R⊕ | 1.5068278135301 × 10-9R⊕ | 1.5696123057605 × 10-9R⊕ | 1.6323967979909 × 10-9R⊕ | 1.6951812902213 × 10-9R⊕ | 1.7579657824517 × 10-9R⊕ | 1.8207502746822 × 10-9R⊕ | 1.8835347669126 × 10-9R⊕ | 1.946319259143 × 10-9R⊕ | 2.0091037513734 × 10-9R⊕ | 2.0718882436038 × 10-9R⊕ | 2.1346727358342 × 10-9R⊕ | 2.1974572280647 × 10-9R⊕ | 2.2602417202951 × 10-9R⊕ | 2.3230262125255 × 10-9R⊕ | 2.3858107047559 × 10-9R⊕ | 2.4485951969863 × 10-9R⊕ | 2.5113796892168 × 10-9R⊕ | 2.5741641814472 × 10-9R⊕ | 2.6369486736776 × 10-9R⊕ | 2.699733165908 × 10-9R⊕ | 2.7625176581384 × 10-9R⊕ | 2.8253021503689 × 10-9R⊕ | 2.8880866425993 × 10-9R⊕ | 2.9508711348297 × 10-9R⊕ | 3.0136556270601 × 10-9R⊕ | 3.0764401192905 × 10-9R⊕ | 3.139224611521 × 10-9R⊕ | 3.2020091037514 × 10-9R⊕ | 3.2647935959818 × 10-9R⊕ | 3.3275780882122 × 10-9R⊕ | 3.3903625804426 × 10-9R⊕ | 3.4531470726731 × 10-9R⊕ | 3.5159315649035 × 10-9R⊕ | 3.5787160571339 × 10-9R⊕ | 3.6415005493643 × 10-9R⊕ | 3.7042850415947 × 10-9R⊕ | 3.7670695338251 × 10-9R⊕ | 3.8298540260556 × 10-9R⊕ | 3.892638518286 × 10-9R⊕ | 3.9554230105164 × 10-9R⊕ | 4.0182075027468 × 10-9R⊕ | 4.0809919949772 × 10-9R⊕ | 4.1437764872077 × 10-9R⊕ | 4.2065609794381 × 10-9R⊕ | 4.2693454716685 × 10-9R⊕ | 4.3321299638989 × 10-9R⊕ | 4.3949144561293 × 10-9R⊕ | 4.4576989483598 × 10-9R⊕ | 4.5204834405902 × 10-9R⊕ | 4.5832679328206 × 10-9R⊕ | 4.646052425051 × 10-9R⊕ | 4.7088369172814 × 10-9R⊕ | 4.7716214095119 × 10-9R⊕ | 4.8344059017423 × 10-9R⊕ | 4.8971903939727 × 10-9R⊕ | 4.9599748862031 × 10-9R⊕ | 5.0227593784335 × 10-9R⊕ | 5.0855438706639 × 10-9R⊕ | 5.1483283628944 × 10-9R⊕ | 5.2111128551248 × 10-9R⊕ | 5.2738973473552 × 10-9R⊕ | 5.3366818395856 × 10-9R⊕ | 5.399466331816 × 10-9R⊕ | 5.4622508240465 × 10-9R⊕ | 5.5250353162769 × 10-9R⊕ | 5.5878198085073 × 10-9R⊕ | 5.6506043007377 × 10-9R⊕ | 5.7133887929681 × 10-9R⊕ | 5.7761732851986 × 10-9R⊕ | 5.838957777429 × 10-9R⊕ | 5.9017422696594 × 10-9R⊕ | 5.9645267618898 × 10-9R⊕ | 6.0273112541202 × 10-9R⊕ | 6.0900957463507 × 10-9R⊕ | 6.1528802385811 × 10-9R⊕ | 6.2156647308115 × 10-9R⊕ | 6.2784492230419 × 10-9R⊕ |
A metric inch is a nickname for a preferred 1⁄4 subdivision of an ISO 2848 basic module, or 1⁄12 of a metric foot measuring 25 millimetres (0.984 in). A metric inch is 0.4 millimetres (0.016 in) shorter than an inch.
The term was similarly used to refer to the historical Soviet Bloc practice of spacing integrated circuit pins at 1⁄10 of a 25 mm "metric inch" length, instead of the western practice of 1⁄10 of an imperial inch.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| metric inch | in (metric) | = 0.016 in | = 0.0004 m | Metric system SI |
| metric inches | earth radius | metric inches | earth radius |
|---|---|---|---|
| 1 | ≈ 6.2784492230419E-11 | 4 | ≈ 2.5113796892168E-10 |
| 1.5 | ≈ 9.4176738345629E-11 | 4.5 | ≈ 2.8253021503689E-10 |
| 2 | ≈ 1.2556898446084E-10 | 5 | ≈ 3.139224611521E-10 |
| 2.5 | ≈ 1.5696123057605E-10 | 5.5 | ≈ 3.453147072673E-10 |
| 3 | ≈ 1.8835347669126E-10 | 6 | ≈ 3.7670695338251E-10 |
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 | metric inches | earth radius | metric inches |
|---|---|---|---|
| 1 | ≈ 15927500000 | 4 | ≈ 63710000000 |
| 1.5 | ≈ 23891250000 | 4.5 | ≈ 71673750000 |
| 2 | ≈ 31855000000 | 5 | ≈ 79637500000 |
| 2.5 | ≈ 39818750000 | 5.5 | ≈ 87601250000 |
| 3 | ≈ 47782500000 | 6 | ≈ 95565000000 |
| metric inches | earth radius |
|---|---|
| 1 | ≈ 6.2784492230419 × 10-11 |
| 15 927 500 000 | ≈ 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 …) |