| meter | 1 m | 2 m | 3 m | 4 m | 5 m | 6 m | 7 m | 8 m | 9 m | 10 m | 11 m | 12 m | 13 m | 14 m | 15 m | 16 m | 17 m | 18 m | 19 m | 20 m | 21 m | 22 m | 23 m | 24 m | 25 m | 26 m | 27 m | 28 m | 29 m | 30 m | 31 m | 32 m | 33 m | 34 m | 35 m | 36 m | 37 m | 38 m | 39 m | 40 m | 41 m | 42 m | 43 m | 44 m | 45 m | 46 m | 47 m | 48 m | 49 m | 50 m | 51 m | 52 m | 53 m | 54 m | 55 m | 56 m | 57 m | 58 m | 59 m | 60 m | 61 m | 62 m | 63 m | 64 m | 65 m | 66 m | 67 m | 68 m | 69 m | 70 m | 71 m | 72 m | 73 m | 74 m | 75 m | 76 m | 77 m | 78 m | 79 m | 80 m | 81 m | 82 m | 83 m | 84 m | 85 m | 86 m | 87 m | 88 m | 89 m | 90 m | 91 m | 92 m | 93 m | 94 m | 95 m | 96 m | 97 m | 98 m | 99 m | 100 m |
| millimeter | 1 000 mm | 2 000 mm | 3 000 mm | 4 000 mm | 5 000 mm | 6 000 mm | 7 000 mm | 8 000 mm | 9 000 mm | 10 000 mm | 11 000 mm | 12 000 mm | 13 000 mm | 14 000 mm | 15 000 mm | 16 000 mm | 17 000 mm | 18 000 mm | 19 000 mm | 20 000 mm | 21 000 mm | 22 000 mm | 23 000 mm | 24 000 mm | 25 000 mm | 26 000 mm | 27 000 mm | 28 000 mm | 29 000 mm | 30 000 mm | 31 000 mm | 32 000 mm | 33 000 mm | 34 000 mm | 35 000 mm | 36 000 mm | 37 000 mm | 38 000 mm | 39 000 mm | 40 000 mm | 41 000 mm | 42 000 mm | 43 000 mm | 44 000 mm | 45 000 mm | 46 000 mm | 47 000 mm | 48 000 mm | 49 000 mm | 50 000 mm | 51 000 mm | 52 000 mm | 53 000 mm | 54 000 mm | 55 000 mm | 56 000 mm | 57 000 mm | 58 000 mm | 59 000 mm | 60 000 mm | 61 000 mm | 62 000 mm | 63 000 mm | 64 000 mm | 65 000 mm | 66 000 mm | 67 000 mm | 68 000 mm | 69 000 mm | 70 000 mm | 71 000 mm | 72 000 mm | 73 000 mm | 74 000 mm | 75 000 mm | 76 000 mm | 77 000 mm | 78 000 mm | 79 000 mm | 80 000 mm | 81 000 mm | 82 000 mm | 83 000 mm | 84 000 mm | 85 000 mm | 86 000 mm | 87 000 mm | 88 000 mm | 89 000 mm | 90 000 mm | 91 000 mm | 92 000 mm | 93 000 mm | 94 000 mm | 95 000 mm | 96 000 mm | 97 000 mm | 98 000 mm | 99 000 mm | 100 000 mm |
The metre (international spelling) or meter (American spelling) (from the Greek noun μέτρον, "measure") is the base unit of length in the International System of Units (SI). The SI unit symbol is m. The metre is defined as the length of the path travelled by light in a vacuum in 1/299 792 458 seconds.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| meter | m | ≡ Distance light travels in 1⁄299792458 of a second in vacuum. | ≡ 1 m | Metric system SI |
| meters | millimeters | meters | millimeters |
|---|---|---|---|
| 1 | ≡ 1000 | 4 | ≡ 4000 |
| 1.5 | ≡ 1500 | 4.5 | ≡ 4500 |
| 2 | ≡ 2000 | 5 | ≡ 5000 |
| 2.5 | ≡ 2500 | 5.5 | ≡ 5500 |
| 3 | ≡ 3000 | 6 | ≡ 6000 |
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 | meters | millimeters | meters |
|---|---|---|---|
| 1 | ≡ 0.001 | 4 | ≡ 0.004 |
| 1.5 | ≡ 0.0015 | 4.5 | ≡ 0.0045 |
| 2 | ≡ 0.002 | 5 | ≡ 0.005 |
| 2.5 | ≡ 0.0025 | 5.5 | ≡ 0.0055 |
| 3 | ≡ 0.003 | 6 | ≡ 0.006 |
| meters | millimeters |
|---|---|
| 1 | ≡ 1 000 |
| 0.001 | ≡ 1 |
You can find the conversion in other languages in the following:
| 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 …) |