foot | 1 ft | 2 ft | 3 ft | 4 ft | 5 ft | 6 ft | 7 ft | 8 ft | 9 ft | 10 ft | 11 ft | 12 ft | 13 ft | 14 ft | 15 ft | 16 ft | 17 ft | 18 ft | 19 ft | 20 ft | 21 ft | 22 ft | 23 ft | 24 ft | 25 ft | 26 ft | 27 ft | 28 ft | 29 ft | 30 ft | 31 ft | 32 ft | 33 ft | 34 ft | 35 ft | 36 ft | 37 ft | 38 ft | 39 ft | 40 ft | 41 ft | 42 ft | 43 ft | 44 ft | 45 ft | 46 ft | 47 ft | 48 ft | 49 ft | 50 ft | 51 ft | 52 ft | 53 ft | 54 ft | 55 ft | 56 ft | 57 ft | 58 ft | 59 ft | 60 ft | 61 ft | 62 ft | 63 ft | 64 ft | 65 ft | 66 ft | 67 ft | 68 ft | 69 ft | 70 ft | 71 ft | 72 ft | 73 ft | 74 ft | 75 ft | 76 ft | 77 ft | 78 ft | 79 ft | 80 ft | 81 ft | 82 ft | 83 ft | 84 ft | 85 ft | 86 ft | 87 ft | 88 ft | 89 ft | 90 ft | 91 ft | 92 ft | 93 ft | 94 ft | 95 ft | 96 ft | 97 ft | 98 ft | 99 ft | 100 ft |
foot, metric (short) | 1.016 smf | 2.032 smf | 3.048 smf | 4.064 smf | 5.08 smf | 6.096 smf | 7.112 smf | 8.128 smf | 9.144 smf | 10.16 smf | 11.176 smf | 12.192 smf | 13.208 smf | 14.224 smf | 15.24 smf | 16.256 smf | 17.272 smf | 18.288 smf | 19.304 smf | 20.32 smf | 21.336 smf | 22.352 smf | 23.368 smf | 24.384 smf | 25.4 smf | 26.416 smf | 27.432 smf | 28.448 smf | 29.464 smf | 30.48 smf | 31.496 smf | 32.512 smf | 33.528 smf | 34.544 smf | 35.56 smf | 36.576 smf | 37.592 smf | 38.608 smf | 39.624 smf | 40.64 smf | 41.656 smf | 42.672 smf | 43.688 smf | 44.704 smf | 45.72 smf | 46.736 smf | 47.752 smf | 48.768 smf | 49.784 smf | 50.8 smf | 51.816 smf | 52.832 smf | 53.848 smf | 54.864 smf | 55.88 smf | 56.896 smf | 57.912 smf | 58.928 smf | 59.944 smf | 60.96 smf | 61.976 smf | 62.992 smf | 64.008 smf | 65.024 smf | 66.04 smf | 67.056 smf | 68.072 smf | 69.088 smf | 70.104 smf | 71.12 smf | 72.136 smf | 73.152 smf | 74.168 smf | 75.184 smf | 76.2 smf | 77.216 smf | 78.232 smf | 79.248 smf | 80.264 smf | 81.28 smf | 82.296 smf | 83.312 smf | 84.328 smf | 85.344 smf | 86.36 smf | 87.376 smf | 88.392 smf | 89.408 smf | 90.424 smf | 91.44 smf | 92.456 smf | 93.472 smf | 94.488 smf | 95.504 smf | 96.52 smf | 97.536 smf | 98.552 smf | 99.568 smf | 100.584 smf | 101.6 smf |
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 | feet, metric (short) | feet | feet, metric (short) |
---|---|---|---|
1 | ≡ 1.016 | 4 | ≡ 4.064 |
1.5 | ≡ 1.524 | 4.5 | ≡ 4.572 |
2 | ≡ 2.032 | 5 | ≡ 5.08 |
2.5 | ≡ 2.54 | 5.5 | ≡ 5.588 |
3 | ≡ 3.048 | 6 | ≡ 6.096 |
≡ 0.30 m
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric (short) | smf | ≡ 0.30 m | ≡ 0.30 m | Metric system SI |
feet, metric (short) | feet | feet, metric (short) | feet |
---|---|---|---|
1 | ≡ 0.98425196850394 | 4 | ≡ 3.9370078740157 |
1.5 | ≡ 1.4763779527559 | 4.5 | ≡ 4.4291338582677 |
2 | ≡ 1.9685039370079 | 5 | ≡ 4.9212598425197 |
2.5 | ≡ 2.4606299212598 | 5.5 | ≡ 5.4133858267717 |
3 | ≡ 2.9527559055118 | 6 | ≡ 5.9055118110236 |
feet | feet, metric (short) |
---|---|
1 | ≡ 1.016 |
0.9842520 | ≡ 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 …) |