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 |
ell | 0.0222222 ell | 0.0444444 ell | 0.0666667 ell | 0.0888889 ell | 0.1111111 ell | 0.1333333 ell | 0.1555556 ell | 0.1777778 ell | 0.2 ell | 0.2222222 ell | 0.2444444 ell | 0.2666667 ell | 0.2888889 ell | 0.3111111 ell | 0.3333333 ell | 0.3555556 ell | 0.3777778 ell | 0.4 ell | 0.4222222 ell | 0.4444444 ell | 0.4666667 ell | 0.4888889 ell | 0.5111111 ell | 0.5333333 ell | 0.5555556 ell | 0.5777778 ell | 0.6 ell | 0.6222222 ell | 0.6444444 ell | 0.6666667 ell | 0.6888889 ell | 0.7111111 ell | 0.7333333 ell | 0.7555556 ell | 0.7777778 ell | 0.8 ell | 0.8222222 ell | 0.8444444 ell | 0.8666667 ell | 0.8888889 ell | 0.9111111 ell | 0.9333333 ell | 0.9555556 ell | 0.9777778 ell | 1 ell | 1.0222222 ell | 1.0444444 ell | 1.0666667 ell | 1.0888889 ell | 1.1111111 ell | 1.1333333 ell | 1.1555556 ell | 1.1777778 ell | 1.2 ell | 1.2222222 ell | 1.2444444 ell | 1.2666667 ell | 1.2888889 ell | 1.3111111 ell | 1.3333333 ell | 1.3555556 ell | 1.3777778 ell | 1.4 ell | 1.4222222 ell | 1.4444444 ell | 1.4666667 ell | 1.4888889 ell | 1.5111111 ell | 1.5333333 ell | 1.5555556 ell | 1.5777778 ell | 1.6 ell | 1.6222222 ell | 1.6444444 ell | 1.6666667 ell | 1.6888889 ell | 1.7111111 ell | 1.7333333 ell | 1.7555556 ell | 1.7777778 ell | 1.8 ell | 1.8222222 ell | 1.8444444 ell | 1.8666667 ell | 1.8888889 ell | 1.9111111 ell | 1.9333333 ell | 1.9555556 ell | 1.9777778 ell | 2 ell | 2.0222222 ell | 2.0444444 ell | 2.0666667 ell | 2.0888889 ell | 2.1111111 ell | 2.1333333 ell | 2.1555556 ell | 2.1777778 ell | 2.2 ell | 2.2222222 ell |
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 | ell | inches | ell |
---|---|---|---|
1 | = 0.022222222222222 | 4 | = 0.088888888888889 |
1.5 | = 0.033333333333333 | 4.5 | = 0.1 |
2 | = 0.044444444444444 | 5 | = 0.11111111111111 |
2.5 | = 0.055555555555556 | 5.5 | = 0.12222222222222 |
3 | = 0.066666666666667 | 6 | = 0.13333333333333 |
An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a unit of measurement, originally a cubit, i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ell | ell | ≡ 45 in (In England usually) | = 1.143 m | Other (Length) |
ell | inches | ell | inches |
---|---|---|---|
1 | = 45 | 4 | = 180 |
1.5 | = 67.5 | 4.5 | = 202.5 |
2 | = 90 | 5 | = 225 |
2.5 | = 112.5 | 5.5 | = 247.5 |
3 | = 135 | 6 | = 270 |
inches | ell |
---|---|
1 | = 0.0222222 |
45 | = 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 …) |