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 |
rope | 0.05 rope | 0.1 rope | 0.15 rope | 0.2 rope | 0.25 rope | 0.3 rope | 0.35 rope | 0.4 rope | 0.45 rope | 0.5 rope | 0.55 rope | 0.6 rope | 0.65 rope | 0.7 rope | 0.75 rope | 0.8 rope | 0.85 rope | 0.9 rope | 0.95 rope | 1 rope | 1.05 rope | 1.1 rope | 1.15 rope | 1.2 rope | 1.25 rope | 1.3 rope | 1.35 rope | 1.4 rope | 1.45 rope | 1.5 rope | 1.55 rope | 1.6 rope | 1.65 rope | 1.7 rope | 1.75 rope | 1.8 rope | 1.85 rope | 1.9 rope | 1.95 rope | 2 rope | 2.05 rope | 2.1 rope | 2.15 rope | 2.2 rope | 2.25 rope | 2.3 rope | 2.35 rope | 2.4 rope | 2.45 rope | 2.5 rope | 2.55 rope | 2.6 rope | 2.65 rope | 2.7 rope | 2.75 rope | 2.8 rope | 2.85 rope | 2.9 rope | 2.95 rope | 3 rope | 3.05 rope | 3.1 rope | 3.15 rope | 3.2 rope | 3.25 rope | 3.3 rope | 3.35 rope | 3.4 rope | 3.45 rope | 3.5 rope | 3.55 rope | 3.6 rope | 3.65 rope | 3.7 rope | 3.75 rope | 3.8 rope | 3.85 rope | 3.9 rope | 3.95 rope | 4 rope | 4.05 rope | 4.1 rope | 4.15 rope | 4.2 rope | 4.25 rope | 4.3 rope | 4.35 rope | 4.4 rope | 4.45 rope | 4.5 rope | 4.55 rope | 4.6 rope | 4.65 rope | 4.7 rope | 4.75 rope | 4.8 rope | 4.85 rope | 4.9 rope | 4.95 rope | 5 rope |
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 | ropes | feet | ropes |
---|---|---|---|
1 | = 0.05 | 4 | = 0.2 |
1.5 | = 0.075 | 4.5 | = 0.225 |
2 | = 0.1 | 5 | = 0.25 |
2.5 | = 0.125 | 5.5 | = 0.275 |
3 | = 0.15 | 6 | = 0.3 |
A rope may refer to any of several units of measurement initially determined or formed by ropes or knotted cords.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
rope | rope | ≡ 20 ft | = 6.096 m | Other (Length) |
ropes | feet | ropes | feet |
---|---|---|---|
1 | = 20 | 4 | = 80 |
1.5 | = 30 | 4.5 | = 90 |
2 | = 40 | 5 | = 100 |
2.5 | = 50 | 5.5 | = 110 |
3 | = 60 | 6 | = 120 |
feet | ropes |
---|---|
1 | = 0.05 |
20 | = 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 …) |