| 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 …) |