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 |
line | 144 ln | 288 ln | 432 ln | 576 ln | 720 ln | 864 ln | 1 008 ln | 1 152 ln | 1 296 ln | 1 440 ln | 1 584 ln | 1 728 ln | 1 872 ln | 2 016 ln | 2 160 ln | 2 304 ln | 2 448 ln | 2 592 ln | 2 736 ln | 2 880 ln | 3 024 ln | 3 168 ln | 3 312 ln | 3 456 ln | 3 600 ln | 3 744 ln | 3 888 ln | 4 032 ln | 4 176 ln | 4 320 ln | 4 464 ln | 4 608 ln | 4 752 ln | 4 896 ln | 5 040 ln | 5 184 ln | 5 328 ln | 5 472 ln | 5 616 ln | 5 760 ln | 5 904 ln | 6 048 ln | 6 192 ln | 6 336 ln | 6 480 ln | 6 624 ln | 6 768 ln | 6 912 ln | 7 056 ln | 7 200 ln | 7 344 ln | 7 488 ln | 7 632 ln | 7 776 ln | 7 920 ln | 8 064 ln | 8 208 ln | 8 352 ln | 8 496 ln | 8 640 ln | 8 784 ln | 8 928 ln | 9 072 ln | 9 216 ln | 9 360 ln | 9 504 ln | 9 648 ln | 9 792 ln | 9 936 ln | 10 080 ln | 10 224 ln | 10 368 ln | 10 512 ln | 10 656 ln | 10 800 ln | 10 944 ln | 11 088 ln | 11 232 ln | 11 376 ln | 11 520 ln | 11 664 ln | 11 808 ln | 11 952 ln | 12 096 ln | 12 240 ln | 12 384 ln | 12 528 ln | 12 672 ln | 12 816 ln | 12 960 ln | 13 104 ln | 13 248 ln | 13 392 ln | 13 536 ln | 13 680 ln | 13 824 ln | 13 968 ln | 14 112 ln | 14 256 ln | 14 400 ln |
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 | lines | feet | lines |
---|---|---|---|
1 | = 144 | 4 | = 576 |
1.5 | = 216 | 4.5 | = 648 |
2 | = 288 | 5 | = 720 |
2.5 | = 360 | 5.5 | = 792 |
3 | = 432 | 6 | = 864 |
The line (abbreviated L or l) was a small English unit of length, variously reckoned as 1⁄10, 1⁄12, 1⁄16, or 1⁄40 of an inch. It was not included among the units authorized as the British Imperial system in 1824.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
line | ln | ≡ 1⁄12 in | = 0.002116 m | Imperial/US |
lines | feet | lines | feet |
---|---|---|---|
1 | = 0.0069444444444444 | 4 | = 0.027777777777778 |
1.5 | = 0.010416666666667 | 4.5 | = 0.03125 |
2 | = 0.013888888888889 | 5 | = 0.034722222222222 |
2.5 | = 0.017361111111111 | 5.5 | = 0.038194444444444 |
3 | = 0.020833333333333 | 6 | = 0.041666666666667 |
feet | lines |
---|---|
1 | = 144 |
0.0069444 | = 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 …) |