inch | 1 in | 2 in | 3 in | 4 in | 5 in | 6 in | 7 in | 8 in | 9 in | 10 in | 11 in | 12 in | 13 in | 14 in | 15 in | 16 in | 17 in | 18 in | 19 in | 20 in | 21 in | 22 in | 23 in | 24 in | 25 in | 26 in | 27 in | 28 in | 29 in | 30 in | 31 in | 32 in | 33 in | 34 in | 35 in | 36 in | 37 in | 38 in | 39 in | 40 in | 41 in | 42 in | 43 in | 44 in | 45 in | 46 in | 47 in | 48 in | 49 in | 50 in | 51 in | 52 in | 53 in | 54 in | 55 in | 56 in | 57 in | 58 in | 59 in | 60 in | 61 in | 62 in | 63 in | 64 in | 65 in | 66 in | 67 in | 68 in | 69 in | 70 in | 71 in | 72 in | 73 in | 74 in | 75 in | 76 in | 77 in | 78 in | 79 in | 80 in | 81 in | 82 in | 83 in | 84 in | 85 in | 86 in | 87 in | 88 in | 89 in | 90 in | 91 in | 92 in | 93 in | 94 in | 95 in | 96 in | 97 in | 98 in | 99 in | 100 in |
line | 12 ln | 24 ln | 36 ln | 48 ln | 60 ln | 72 ln | 84 ln | 96 ln | 108 ln | 120 ln | 132 ln | 144 ln | 156 ln | 168 ln | 180 ln | 192 ln | 204 ln | 216 ln | 228 ln | 240 ln | 252 ln | 264 ln | 276 ln | 288 ln | 300 ln | 312 ln | 324 ln | 336 ln | 348 ln | 360 ln | 372 ln | 384 ln | 396 ln | 408 ln | 420 ln | 432 ln | 444 ln | 456 ln | 468 ln | 480 ln | 492 ln | 504 ln | 516 ln | 528 ln | 540 ln | 552 ln | 564 ln | 576 ln | 588 ln | 600 ln | 612 ln | 624 ln | 636 ln | 648 ln | 660 ln | 672 ln | 684 ln | 696 ln | 708 ln | 720 ln | 732 ln | 744 ln | 756 ln | 768 ln | 780 ln | 792 ln | 804 ln | 816 ln | 828 ln | 840 ln | 852 ln | 864 ln | 876 ln | 888 ln | 900 ln | 912 ln | 924 ln | 936 ln | 948 ln | 960 ln | 972 ln | 984 ln | 996 ln | 1 008 ln | 1 020 ln | 1 032 ln | 1 044 ln | 1 056 ln | 1 068 ln | 1 080 ln | 1 092 ln | 1 104 ln | 1 116 ln | 1 128 ln | 1 140 ln | 1 152 ln | 1 164 ln | 1 176 ln | 1 188 ln | 1 200 ln |
The inch (abbreviation: in or ″) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot. Derived from the Roman uncia ("twelfth"), inch is also sometimes used to translate related units in other measurement systems, usually understood as deriving from the width of the human thumb.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
inch | in | ≡ 2.54 cm ≡ 1⁄36 yd ≡ 1⁄12 ft | ≡ 0.0254 m | Imperial/US |
inches | lines | inches | lines |
---|---|---|---|
1 | = 12 | 4 | = 48 |
1.5 | = 18 | 4.5 | = 54 |
2 | = 24 | 5 | = 60 |
2.5 | = 30 | 5.5 | = 66 |
3 | = 36 | 6 | = 72 |
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 | inches | lines | inches |
---|---|---|---|
1 | = 0.083333333333333 | 4 | = 0.33333333333333 |
1.5 | = 0.125 | 4.5 | = 0.375 |
2 | = 0.16666666666667 | 5 | = 0.41666666666667 |
2.5 | = 0.20833333333333 | 5.5 | = 0.45833333333333 |
3 | = 0.25 | 6 | = 0.5 |
inches | lines |
---|---|
1 | = 12 |
0.0833333 | = 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 …) |