| 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 |
| hand | 3 hand | 6 hand | 9 hand | 12 hand | 15 hand | 18 hand | 21 hand | 24 hand | 27 hand | 30 hand | 33 hand | 36 hand | 39 hand | 42 hand | 45 hand | 48 hand | 51 hand | 54 hand | 57 hand | 60 hand | 63 hand | 66 hand | 69 hand | 72 hand | 75 hand | 78 hand | 81 hand | 84 hand | 87 hand | 90 hand | 93 hand | 96 hand | 99 hand | 102 hand | 105 hand | 108 hand | 111 hand | 114 hand | 117 hand | 120 hand | 123 hand | 126 hand | 129 hand | 132 hand | 135 hand | 138 hand | 141 hand | 144 hand | 147 hand | 150 hand | 153 hand | 156 hand | 159 hand | 162 hand | 165 hand | 168 hand | 171 hand | 174 hand | 177 hand | 180 hand | 183 hand | 186 hand | 189 hand | 192 hand | 195 hand | 198 hand | 201 hand | 204 hand | 207 hand | 210 hand | 213 hand | 216 hand | 219 hand | 222 hand | 225 hand | 228 hand | 231 hand | 234 hand | 237 hand | 240 hand | 243 hand | 246 hand | 249 hand | 252 hand | 255 hand | 258 hand | 261 hand | 264 hand | 267 hand | 270 hand | 273 hand | 276 hand | 279 hand | 282 hand | 285 hand | 288 hand | 291 hand | 294 hand | 297 hand | 300 hand |
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 | hands | feet | hands |
|---|---|---|---|
| 1 | ≡ 3 | 4 | ≡ 12 |
| 1.5 | ≡ 4.5 | 4.5 | ≡ 13.5 |
| 2 | ≡ 6 | 5 | ≡ 15 |
| 2.5 | ≡ 7.5 | 5.5 | ≡ 16.5 |
| 3 | ≡ 9 | 6 | ≡ 18 |
The hand is a non-SI unit of measurement of length standardized to 4 inches (101.6 mm). It is used to measure the height of horses in some English-speaking countries, including Australia, Canada, the Republic of Ireland, the United Kingdom and the United States.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| hand | ≡ 4 in | ≡ 0.1016 m | Metric system Non-SI |
| hands | feet | hands | feet |
|---|---|---|---|
| 1 | ≡ 0.33333333333333 | 4 | ≡ 1.3333333333333 |
| 1.5 | ≡ 0.5 | 4.5 | ≡ 1.5 |
| 2 | ≡ 0.66666666666667 | 5 | ≡ 1.6666666666667 |
| 2.5 | ≡ 0.83333333333333 | 5.5 | ≡ 1.8333333333333 |
| 3 | ≡ 1 | 6 | ≡ 2 |
| feet | hands |
|---|---|
| 1 | ≡ 3 |
| 0.3333333 | ≡ 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 …) |