| 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) |
| foot | 0.0013123 ft | 0.0026247 ft | 0.0039370 ft | 0.0052493 ft | 0.0065617 ft | 0.0078740 ft | 0.0091864 ft | 0.0104987 ft | 0.0118110 ft | 0.0131234 ft | 0.0144357 ft | 0.0157480 ft | 0.0170604 ft | 0.0183727 ft | 0.0196850 ft | 0.0209974 ft | 0.0223097 ft | 0.0236220 ft | 0.0249344 ft | 0.0262467 ft | 0.0275591 ft | 0.0288714 ft | 0.0301837 ft | 0.0314961 ft | 0.0328084 ft | 0.0341207 ft | 0.0354331 ft | 0.0367454 ft | 0.0380577 ft | 0.0393701 ft | 0.0406824 ft | 0.0419948 ft | 0.0433071 ft | 0.0446194 ft | 0.0459318 ft | 0.0472441 ft | 0.0485564 ft | 0.0498688 ft | 0.0511811 ft | 0.0524934 ft | 0.0538058 ft | 0.0551181 ft | 0.0564304 ft | 0.0577428 ft | 0.0590551 ft | 0.0603675 ft | 0.0616798 ft | 0.0629921 ft | 0.0643045 ft | 0.0656168 ft | 0.0669291 ft | 0.0682415 ft | 0.0695538 ft | 0.0708661 ft | 0.0721785 ft | 0.0734908 ft | 0.0748031 ft | 0.0761155 ft | 0.0774278 ft | 0.0787402 ft | 0.0800525 ft | 0.0813648 ft | 0.0826772 ft | 0.0839895 ft | 0.0853018 ft | 0.0866142 ft | 0.0879265 ft | 0.0892388 ft | 0.0905512 ft | 0.0918635 ft | 0.0931759 ft | 0.0944882 ft | 0.0958005 ft | 0.0971129 ft | 0.0984252 ft | 0.0997375 ft | 0.1010499 ft | 0.1023622 ft | 0.1036745 ft | 0.1049869 ft | 0.1062992 ft | 0.1076115 ft | 0.1089239 ft | 0.1102362 ft | 0.1115486 ft | 0.1128609 ft | 0.1141732 ft | 0.1154856 ft | 0.1167979 ft | 0.1181102 ft | 0.1194226 ft | 0.1207349 ft | 0.1220472 ft | 0.1233596 ft | 0.1246719 ft | 0.1259843 ft | 0.1272966 ft | 0.1286089 ft | 0.1299213 ft | 0.1312336 ft |
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 | feet | metric inches | feet |
|---|---|---|---|
| 1 | = 0.0013123359580052 | 4 | = 0.005249343832021 |
| 1.5 | = 0.0019685039370079 | 4.5 | = 0.0059055118110236 |
| 2 | = 0.0026246719160105 | 5 | = 0.0065616797900262 |
| 2.5 | = 0.0032808398950131 | 5.5 | = 0.0072178477690289 |
| 3 | = 0.0039370078740157 | 6 | = 0.0078740157480315 |
The foot (pl. feet; abbreviation: ft; symbol: ′, the prime symbol) is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly. In both systems, the foot comprises 12 inches and three feet compose a yard.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| foot | ft | ≡ 0.3048 m ≡ 1⁄3 yd ≡ 12 inches | ≡ 0.3048 m | Imperial/US |
| feet | metric inches | feet | metric inches |
|---|---|---|---|
| 1 | = 762 | 4 | = 3048 |
| 1.5 | = 1143 | 4.5 | = 3429 |
| 2 | = 1524 | 5 | = 3810 |
| 2.5 | = 1905 | 5.5 | = 4191 |
| 3 | = 2286 | 6 | = 4572 |
| metric inches | feet |
|---|---|
| 1 | = 0.0013123 |
| 762 | = 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 …) |