| decimeter | 1 dm | 2 dm | 3 dm | 4 dm | 5 dm | 6 dm | 7 dm | 8 dm | 9 dm | 10 dm | 11 dm | 12 dm | 13 dm | 14 dm | 15 dm | 16 dm | 17 dm | 18 dm | 19 dm | 20 dm | 21 dm | 22 dm | 23 dm | 24 dm | 25 dm | 26 dm | 27 dm | 28 dm | 29 dm | 30 dm | 31 dm | 32 dm | 33 dm | 34 dm | 35 dm | 36 dm | 37 dm | 38 dm | 39 dm | 40 dm | 41 dm | 42 dm | 43 dm | 44 dm | 45 dm | 46 dm | 47 dm | 48 dm | 49 dm | 50 dm | 51 dm | 52 dm | 53 dm | 54 dm | 55 dm | 56 dm | 57 dm | 58 dm | 59 dm | 60 dm | 61 dm | 62 dm | 63 dm | 64 dm | 65 dm | 66 dm | 67 dm | 68 dm | 69 dm | 70 dm | 71 dm | 72 dm | 73 dm | 74 dm | 75 dm | 76 dm | 77 dm | 78 dm | 79 dm | 80 dm | 81 dm | 82 dm | 83 dm | 84 dm | 85 dm | 86 dm | 87 dm | 88 dm | 89 dm | 90 dm | 91 dm | 92 dm | 93 dm | 94 dm | 95 dm | 96 dm | 97 dm | 98 dm | 99 dm | 100 dm |
| millimeter | 100 mm | 200 mm | 300 mm | 400 mm | 500 mm | 600 mm | 700 mm | 800 mm | 900 mm | 1 000 mm | 1 100 mm | 1 200 mm | 1 300 mm | 1 400 mm | 1 500 mm | 1 600 mm | 1 700 mm | 1 800 mm | 1 900 mm | 2 000 mm | 2 100 mm | 2 200 mm | 2 300 mm | 2 400 mm | 2 500 mm | 2 600 mm | 2 700 mm | 2 800 mm | 2 900 mm | 3 000 mm | 3 100 mm | 3 200 mm | 3 300 mm | 3 400 mm | 3 500 mm | 3 600 mm | 3 700 mm | 3 800 mm | 3 900 mm | 4 000 mm | 4 100 mm | 4 200 mm | 4 300 mm | 4 400 mm | 4 500 mm | 4 600 mm | 4 700 mm | 4 800 mm | 4 900 mm | 5 000 mm | 5 100 mm | 5 200 mm | 5 300 mm | 5 400 mm | 5 500 mm | 5 600 mm | 5 700 mm | 5 800 mm | 5 900 mm | 6 000 mm | 6 100 mm | 6 200 mm | 6 300 mm | 6 400 mm | 6 500 mm | 6 600 mm | 6 700 mm | 6 800 mm | 6 900 mm | 7 000 mm | 7 100 mm | 7 200 mm | 7 300 mm | 7 400 mm | 7 500 mm | 7 600 mm | 7 700 mm | 7 800 mm | 7 900 mm | 8 000 mm | 8 100 mm | 8 200 mm | 8 300 mm | 8 400 mm | 8 500 mm | 8 600 mm | 8 700 mm | 8 800 mm | 8 900 mm | 9 000 mm | 9 100 mm | 9 200 mm | 9 300 mm | 9 400 mm | 9 500 mm | 9 600 mm | 9 700 mm | 9 800 mm | 9 900 mm | 10 000 mm |
Decimeter or decimetre is equal to 10-1 meter (unit of length), comes from a combination of the metric prefix deci (d) and the SI unit of length meter (m). Plural name is decimeters.
| 1 decimeters ≡ 100 millimeters | 4 decimeters ≡ 400 millimeters |
| 1.5 decimeters ≡ 150 millimeters | 4.5 decimeters ≡ 450 millimeters |
| 2 decimeters ≡ 200 millimeters | 5 decimeters ≡ 500 millimeters |
| 2.5 decimeters ≡ 250 millimeters | 5.5 decimeters ≡ 550 millimeters |
| 3 decimeters ≡ 300 millimeters | 6 decimeters ≡ 600 millimeters |
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.
| 1 millimeters ≡ 0.01 decimeters | 4 millimeters ≡ 0.04 decimeters |
| 1.5 millimeters ≡ 0.015 decimeters | 4.5 millimeters ≡ 0.045 decimeters |
| 2 millimeters ≡ 0.02 decimeters | 5 millimeters ≡ 0.05 decimeters |
| 2.5 millimeters ≡ 0.025 decimeters | 5.5 millimeters ≡ 0.055 decimeters |
| 3 millimeters ≡ 0.03 decimeters | 6 millimeters ≡ 0.06 decimeters |
| 1 decimeters ≡ 100 millimeters |
| 1 millimeters ≡ 0.01 decimeters |