| hand | 1 hand | 2 hand | 3 hand | 4 hand | 5 hand | 6 hand | 7 hand | 8 hand | 9 hand | 10 hand | 11 hand | 12 hand | 13 hand | 14 hand | 15 hand | 16 hand | 17 hand | 18 hand | 19 hand | 20 hand | 21 hand | 22 hand | 23 hand | 24 hand | 25 hand | 26 hand | 27 hand | 28 hand | 29 hand | 30 hand | 31 hand | 32 hand | 33 hand | 34 hand | 35 hand | 36 hand | 37 hand | 38 hand | 39 hand | 40 hand | 41 hand | 42 hand | 43 hand | 44 hand | 45 hand | 46 hand | 47 hand | 48 hand | 49 hand | 50 hand | 51 hand | 52 hand | 53 hand | 54 hand | 55 hand | 56 hand | 57 hand | 58 hand | 59 hand | 60 hand | 61 hand | 62 hand | 63 hand | 64 hand | 65 hand | 66 hand | 67 hand | 68 hand | 69 hand | 70 hand | 71 hand | 72 hand | 73 hand | 74 hand | 75 hand | 76 hand | 77 hand | 78 hand | 79 hand | 80 hand | 81 hand | 82 hand | 83 hand | 84 hand | 85 hand | 86 hand | 87 hand | 88 hand | 89 hand | 90 hand | 91 hand | 92 hand | 93 hand | 94 hand | 95 hand | 96 hand | 97 hand | 98 hand | 99 hand | 100 hand |
| millimeter | 101.6 mm | 203.2 mm | 304.8 mm | 406.4 mm | 508 mm | 609.6 mm | 711.2 mm | 812.8 mm | 914.4 mm | 1 016 mm | 1,117.6 mm | 1,219.2 mm | 1,320.8 mm | 1,422.4 mm | 1 524 mm | 1,625.6 mm | 1,727.2 mm | 1,828.8 mm | 1,930.4 mm | 2 032 mm | 2,133.6 mm | 2,235.2 mm | 2,336.8 mm | 2,438.4 mm | 2 540 mm | 2,641.6 mm | 2,743.2 mm | 2,844.8 mm | 2,946.4 mm | 3 048 mm | 3,149.6 mm | 3,251.2 mm | 3,352.8 mm | 3,454.4 mm | 3 556 mm | 3,657.6 mm | 3,759.2 mm | 3,860.8 mm | 3,962.4 mm | 4 064 mm | 4,165.6 mm | 4,267.2 mm | 4,368.8 mm | 4,470.4 mm | 4 572 mm | 4,673.6 mm | 4,775.2 mm | 4,876.8 mm | 4,978.4 mm | 5 080 mm | 5,181.6 mm | 5,283.2 mm | 5,384.8 mm | 5,486.4 mm | 5 588 mm | 5,689.6 mm | 5,791.2 mm | 5,892.8 mm | 5,994.4 mm | 6 096 mm | 6,197.6 mm | 6,299.2 mm | 6,400.8 mm | 6,502.4 mm | 6 604 mm | 6,705.6 mm | 6,807.2 mm | 6,908.8 mm | 7,010.4 mm | 7 112 mm | 7,213.6 mm | 7,315.2 mm | 7,416.8 mm | 7,518.4 mm | 7 620 mm | 7,721.6 mm | 7,823.2 mm | 7,924.8 mm | 8,026.4 mm | 8 128 mm | 8,229.6 mm | 8,331.2 mm | 8,432.8 mm | 8,534.4 mm | 8 636 mm | 8,737.6 mm | 8,839.2 mm | 8,940.8 mm | 9,042.4 mm | 9 144 mm | 9,245.6 mm | 9,347.2 mm | 9,448.8 mm | 9,550.4 mm | 9 652 mm | 9,753.6 mm | 9,855.2 mm | 9,956.8 mm | 10,058.4 mm | 10 160 mm |
The hand is a non-SI unit of measurement of length standardized to 4 inches (101.6 mm). It is used to measure the height of horses in some English-speaking countries, including Australia, Canada, the Republic of Ireland, the United Kingdom and the United States.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| hand | ≡ 4 in | ≡ 0.1016 m | Metric system Non-SI |
| hands | millimeters | hands | millimeters |
|---|---|---|---|
| 1 | ≡ 101.6 | 4 | ≡ 406.4 |
| 1.5 | ≡ 152.4 | 4.5 | ≡ 457.2 |
| 2 | ≡ 203.2 | 5 | ≡ 508 |
| 2.5 | ≡ 254 | 5.5 | ≡ 558.8 |
| 3 | ≡ 304.8 | 6 | ≡ 609.6 |
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 | hands | millimeters | hands |
|---|---|---|---|
| 1 | ≡ 0.0098425196850394 | 4 | ≡ 0.039370078740157 |
| 1.5 | ≡ 0.014763779527559 | 4.5 | ≡ 0.044291338582677 |
| 2 | ≡ 0.019685039370079 | 5 | ≡ 0.049212598425197 |
| 2.5 | ≡ 0.024606299212598 | 5.5 | ≡ 0.054133858267717 |
| 3 | ≡ 0.029527559055118 | 6 | ≡ 0.059055118110236 |
| hands | millimeters |
|---|---|
| 1 | ≡ 101.6 |
| 0.0098425 | ≡ 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 …) |