| ell | 1 ell | 2 ell | 3 ell | 4 ell | 5 ell | 6 ell | 7 ell | 8 ell | 9 ell | 10 ell | 11 ell | 12 ell | 13 ell | 14 ell | 15 ell | 16 ell | 17 ell | 18 ell | 19 ell | 20 ell | 21 ell | 22 ell | 23 ell | 24 ell | 25 ell | 26 ell | 27 ell | 28 ell | 29 ell | 30 ell | 31 ell | 32 ell | 33 ell | 34 ell | 35 ell | 36 ell | 37 ell | 38 ell | 39 ell | 40 ell | 41 ell | 42 ell | 43 ell | 44 ell | 45 ell | 46 ell | 47 ell | 48 ell | 49 ell | 50 ell | 51 ell | 52 ell | 53 ell | 54 ell | 55 ell | 56 ell | 57 ell | 58 ell | 59 ell | 60 ell | 61 ell | 62 ell | 63 ell | 64 ell | 65 ell | 66 ell | 67 ell | 68 ell | 69 ell | 70 ell | 71 ell | 72 ell | 73 ell | 74 ell | 75 ell | 76 ell | 77 ell | 78 ell | 79 ell | 80 ell | 81 ell | 82 ell | 83 ell | 84 ell | 85 ell | 86 ell | 87 ell | 88 ell | 89 ell | 90 ell | 91 ell | 92 ell | 93 ell | 94 ell | 95 ell | 96 ell | 97 ell | 98 ell | 99 ell | 100 ell |
| millimeter | 1 143 mm | 2 286 mm | 3 429 mm | 4 572 mm | 5 715 mm | 6 858 mm | 8 001 mm | 9 144 mm | 10 287 mm | 11 430 mm | 12 573 mm | 13 716 mm | 14 859 mm | 16 002 mm | 17 145 mm | 18 288 mm | 19 431 mm | 20 574 mm | 21 717 mm | 22 860 mm | 24 003 mm | 25 146 mm | 26 289 mm | 27 432 mm | 28 575 mm | 29 718 mm | 30 861 mm | 32 004 mm | 33 147 mm | 34 290 mm | 35 433 mm | 36 576 mm | 37 719 mm | 38 862 mm | 40 005 mm | 41 148 mm | 42 291 mm | 43 434 mm | 44 577 mm | 45 720 mm | 46 863 mm | 48 006 mm | 49 149 mm | 50 292 mm | 51 435 mm | 52 578 mm | 53 721 mm | 54 864 mm | 56 007 mm | 57 150 mm | 58 293 mm | 59 436 mm | 60 579 mm | 61 722 mm | 62 865 mm | 64 008 mm | 65 151 mm | 66 294 mm | 67 437 mm | 68 580 mm | 69 723 mm | 70 866 mm | 72 009 mm | 73 152 mm | 74 295 mm | 75 438 mm | 76 581 mm | 77 724 mm | 78 867 mm | 80 010 mm | 81 153 mm | 82 296 mm | 83 439 mm | 84 582 mm | 85 725 mm | 86 868 mm | 88 011 mm | 89 154 mm | 90 297 mm | 91 440 mm | 92 583 mm | 93 726 mm | 94 869 mm | 96 012 mm | 97 155 mm | 98 298 mm | 99 441 mm | 100 584 mm | 101 727 mm | 102 870 mm | 104 013 mm | 105 156 mm | 106 299 mm | 107 442 mm | 108 585 mm | 109 728 mm | 110 871 mm | 112 014 mm | 113 157 mm | 114 300 mm |
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 | millimeters | ell | millimeters |
|---|---|---|---|
| 1 | = 1143 | 4 | = 4572 |
| 1.5 | = 1714.5 | 4.5 | = 5143.5 |
| 2 | = 2286 | 5 | = 5715 |
| 2.5 | = 2857.5 | 5.5 | = 6286.5 |
| 3 | = 3429 | 6 | = 6858 |
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore there are thousand millimetres in a metre. There are ten millimetres in a centimetre.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| millimeter | mm | ≡ 1×10-3 m ≡ 0.001 m | ≡ 1×10-3 m ≡ 0.001 m | Metric system SI |
| millimeters | ell | millimeters | ell |
|---|---|---|---|
| 1 | = 0.00087489063867017 | 4 | = 0.0034995625546807 |
| 1.5 | = 0.0013123359580052 | 4.5 | = 0.0039370078740157 |
| 2 | = 0.0017497812773403 | 5 | = 0.0043744531933508 |
| 2.5 | = 0.0021872265966754 | 5.5 | = 0.0048118985126859 |
| 3 | = 0.0026246719160105 | 6 | = 0.005249343832021 |
| ell | millimeters |
|---|---|
| 1 | = 1 143 |
| 0.0008749 | = 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 …) |