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 | 0.9638622 mf | 1.9277245 mf | 2.8915867 mf | 3.8554489 mf | 4.8193112 mf | 5.7831734 mf | 6.7470356 mf | 7.7108978 mf | 8.6747601 mf | 9.6386223 mf | 10.6024845 mf | 11.5663468 mf | 12.5302090 mf | 13.4940712 mf | 14.4579335 mf | 15.4217957 mf | 16.3856579 mf | 17.3495202 mf | 18.3133824 mf | 19.2772446 mf | 20.2411068 mf | 21.2049691 mf | 22.1688313 mf | 23.1326935 mf | 24.0965558 mf | 25.0604180 mf | 26.0242802 mf | 26.9881425 mf | 27.9520047 mf | 28.9158669 mf | 29.8797292 mf | 30.8435914 mf | 31.8074536 mf | 32.7713158 mf | 33.7351781 mf | 34.6990403 mf | 35.6629025 mf | 36.6267648 mf | 37.5906270 mf | 38.5544892 mf | 39.5183515 mf | 40.4822137 mf | 41.4460759 mf | 42.4099382 mf | 43.3738004 mf | 44.3376626 mf | 45.3015248 mf | 46.2653871 mf | 47.2292493 mf | 48.1931115 mf | 49.1569738 mf | 50.1208360 mf | 51.0846982 mf | 52.0485605 mf | 53.0124227 mf | 53.9762849 mf | 54.9401472 mf | 55.9040094 mf | 56.8678716 mf | 57.8317338 mf | 58.7955961 mf | 59.7594583 mf | 60.7233205 mf | 61.6871828 mf | 62.6510450 mf | 63.6149072 mf | 64.5787695 mf | 65.5426317 mf | 66.5064939 mf | 67.4703562 mf | 68.4342184 mf | 69.3980806 mf | 70.3619428 mf | 71.3258051 mf | 72.2896673 mf | 73.2535295 mf | 74.2173918 mf | 75.1812540 mf | 76.1451162 mf | 77.1089785 mf | 78.0728407 mf | 79.0367029 mf | 80.0005652 mf | 80.9644274 mf | 81.9282896 mf | 82.8921518 mf | 83.8560141 mf | 84.8198763 mf | 85.7837385 mf | 86.7476008 mf | 87.7114630 mf | 88.6753252 mf | 89.6391875 mf | 90.6030497 mf | 91.5669119 mf | 92.5307742 mf | 93.4946364 mf | 94.4584986 mf | 95.4223609 mf | 96.3862231 mf |
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 | feet | feet, metric |
---|---|---|---|
1 | ≈ 0.96386223080968 | 4 | ≈ 3.8554489232387 |
1.5 | ≈ 1.4457933462145 | 4.5 | ≈ 4.3373800386436 |
2 | ≈ 1.9277244616194 | 5 | ≈ 4.8193111540484 |
2.5 | ≈ 2.4096555770242 | 5.5 | ≈ 5.3012422694533 |
3 | ≈ 2.8915866924291 | 6 | ≈ 5.7831733848581 |
A metric foot is a nickname for a preferred number length of 3 basic modules (3 M), or 30 centimetres (11.811 in). The 30 cm metric ruler was a similar length to the traditional imperial one-foot ruler. A metric foot is 4.8 millimetres (0.189 in) shorter than an imperial foot.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
foot, metric | mf | ≡ √ 1⁄10 m | ≈ 0.31622776602 m | Metric system Non-SI |
feet, metric | feet | feet, metric | feet |
---|---|---|---|
1 | ≈ 1.0374926706693 | 4 | ≈ 4.1499706826772 |
1.5 | ≈ 1.5562390060039 | 4.5 | ≈ 4.6687170180118 |
2 | ≈ 2.0749853413386 | 5 | ≈ 5.1874633533465 |
2.5 | ≈ 2.5937316766732 | 5.5 | ≈ 5.7062096886811 |
3 | ≈ 3.1124780120079 | 6 | ≈ 6.2249560240157 |
feet | feet, metric |
---|---|
1 | ≈ 0.9638622 |
1.0374927 | ≈ 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 …) |