| exameter | 1 Em | 2 Em | 3 Em | 4 Em | 5 Em | 6 Em | 7 Em | 8 Em | 9 Em | 10 Em | 11 Em | 12 Em | 13 Em | 14 Em | 15 Em | 16 Em | 17 Em | 18 Em | 19 Em | 20 Em | 21 Em | 22 Em | 23 Em | 24 Em | 25 Em | 26 Em | 27 Em | 28 Em | 29 Em | 30 Em | 31 Em | 32 Em | 33 Em | 34 Em | 35 Em | 36 Em | 37 Em | 38 Em | 39 Em | 40 Em | 41 Em | 42 Em | 43 Em | 44 Em | 45 Em | 46 Em | 47 Em | 48 Em | 49 Em | 50 Em | 51 Em | 52 Em | 53 Em | 54 Em | 55 Em | 56 Em | 57 Em | 58 Em | 59 Em | 60 Em | 61 Em | 62 Em | 63 Em | 64 Em | 65 Em | 66 Em | 67 Em | 68 Em | 69 Em | 70 Em | 71 Em | 72 Em | 73 Em | 74 Em | 75 Em | 76 Em | 77 Em | 78 Em | 79 Em | 80 Em | 81 Em | 82 Em | 83 Em | 84 Em | 85 Em | 86 Em | 87 Em | 88 Em | 89 Em | 90 Em | 91 Em | 92 Em | 93 Em | 94 Em | 95 Em | 96 Em | 97 Em | 98 Em | 99 Em | 100 Em |
| metric inch | 2.5 × 1021 in (metric) | 5.0 × 1021 in (metric) | 7.5 × 1021 in (metric) | 1.0 × 1022 in (metric) | 1.25 × 1022 in (metric) | 1.5 × 1022 in (metric) | 1.75 × 1022 in (metric) | 2.0 × 1022 in (metric) | 2.25 × 1022 in (metric) | 2.5 × 1022 in (metric) | 2.75 × 1022 in (metric) | 3.0 × 1022 in (metric) | 3.25 × 1022 in (metric) | 3.5 × 1022 in (metric) | 3.75 × 1022 in (metric) | 4.0 × 1022 in (metric) | 4.25 × 1022 in (metric) | 4.5 × 1022 in (metric) | 4.75 × 1022 in (metric) | 5.0 × 1022 in (metric) | 5.25 × 1022 in (metric) | 5.5 × 1022 in (metric) | 5.75 × 1022 in (metric) | 6.0 × 1022 in (metric) | 6.25 × 1022 in (metric) | 6.5 × 1022 in (metric) | 6.75 × 1022 in (metric) | 7.0 × 1022 in (metric) | 7.25 × 1022 in (metric) | 7.5 × 1022 in (metric) | 7.75 × 1022 in (metric) | 8.0 × 1022 in (metric) | 8.25 × 1022 in (metric) | 8.5 × 1022 in (metric) | 8.75 × 1022 in (metric) | 9.0 × 1022 in (metric) | 9.25 × 1022 in (metric) | 9.5 × 1022 in (metric) | 9.75 × 1022 in (metric) | 1.0 × 1023 in (metric) | 1.025 × 1023 in (metric) | 1.05 × 1023 in (metric) | 1.075 × 1023 in (metric) | 1.1 × 1023 in (metric) | 1.125 × 1023 in (metric) | 1.15 × 1023 in (metric) | 1.175 × 1023 in (metric) | 1.2 × 1023 in (metric) | 1.225 × 1023 in (metric) | 1.25 × 1023 in (metric) | 1.275 × 1023 in (metric) | 1.3 × 1023 in (metric) | 1.325 × 1023 in (metric) | 1.35 × 1023 in (metric) | 1.375 × 1023 in (metric) | 1.4 × 1023 in (metric) | 1.425 × 1023 in (metric) | 1.45 × 1023 in (metric) | 1.475 × 1023 in (metric) | 1.5 × 1023 in (metric) | 1.525 × 1023 in (metric) | 1.55 × 1023 in (metric) | 1.575 × 1023 in (metric) | 1.6 × 1023 in (metric) | 1.625 × 1023 in (metric) | 1.65 × 1023 in (metric) | 1.675 × 1023 in (metric) | 1.7 × 1023 in (metric) | 1.725 × 1023 in (metric) | 1.75 × 1023 in (metric) | 1.775 × 1023 in (metric) | 1.8 × 1023 in (metric) | 1.825 × 1023 in (metric) | 1.85 × 1023 in (metric) | 1.875 × 1023 in (metric) | 1.9 × 1023 in (metric) | 1.925 × 1023 in (metric) | 1.95 × 1023 in (metric) | 1.975 × 1023 in (metric) | 2.0 × 1023 in (metric) | 2.025 × 1023 in (metric) | 2.05 × 1023 in (metric) | 2.075 × 1023 in (metric) | 2.1 × 1023 in (metric) | 2.125 × 1023 in (metric) | 2.15 × 1023 in (metric) | 2.175 × 1023 in (metric) | 2.2 × 1023 in (metric) | 2.225 × 1023 in (metric) | 2.25 × 1023 in (metric) | 2.275 × 1023 in (metric) | 2.3 × 1023 in (metric) | 2.325 × 1023 in (metric) | 2.35 × 1023 in (metric) | 2.375 × 1023 in (metric) | 2.4 × 1023 in (metric) | 2.425 × 1023 in (metric) | 2.45 × 1023 in (metric) | 2.475 × 1023 in (metric) | 2.5 × 1023 in (metric) |
Exameter or examatre is a unit of length equal to 1018meters. This unit is a combination of the metric prefix exa (E) and the SI unit of length meter (m) and its abbreviated as "Em". Plural name is exameters.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| exameter | Em | ≡ 1×10+18 m | ≡ 1×10+18 m | Metric system SI |
| exameters | metric inches | exameters | metric inches |
|---|---|---|---|
| 1 | = 2.5E+21 | 4 | = 1.0E+22 |
| 1.5 | = 3.75E+21 | 4.5 | = 1.125E+22 |
| 2 | = 5.0E+21 | 5 | = 1.25E+22 |
| 2.5 | = 6.25E+21 | 5.5 | = 1.375E+22 |
| 3 | = 7.5E+21 | 6 | = 1.5E+22 |
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 | exameters | metric inches | exameters |
|---|---|---|---|
| 1 | = 4.0E-22 | 4 | = 1.6E-21 |
| 1.5 | = 6.0E-22 | 4.5 | = 1.8E-21 |
| 2 | = 8.0E-22 | 5 | = 2.0E-21 |
| 2.5 | = 1.0E-21 | 5.5 | = 2.2E-21 |
| 3 | = 1.2E-21 | 6 | = 2.4E-21 |
| exameters | metric inches |
|---|---|
| 1 | = 2.5 × 1021 |
| 4.0 × 10-22 | = 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 …) |