| millimeter | 1 mm | 2 mm | 3 mm | 4 mm | 5 mm | 6 mm | 7 mm | 8 mm | 9 mm | 10 mm | 11 mm | 12 mm | 13 mm | 14 mm | 15 mm | 16 mm | 17 mm | 18 mm | 19 mm | 20 mm | 21 mm | 22 mm | 23 mm | 24 mm | 25 mm | 26 mm | 27 mm | 28 mm | 29 mm | 30 mm | 31 mm | 32 mm | 33 mm | 34 mm | 35 mm | 36 mm | 37 mm | 38 mm | 39 mm | 40 mm | 41 mm | 42 mm | 43 mm | 44 mm | 45 mm | 46 mm | 47 mm | 48 mm | 49 mm | 50 mm | 51 mm | 52 mm | 53 mm | 54 mm | 55 mm | 56 mm | 57 mm | 58 mm | 59 mm | 60 mm | 61 mm | 62 mm | 63 mm | 64 mm | 65 mm | 66 mm | 67 mm | 68 mm | 69 mm | 70 mm | 71 mm | 72 mm | 73 mm | 74 mm | 75 mm | 76 mm | 77 mm | 78 mm | 79 mm | 80 mm | 81 mm | 82 mm | 83 mm | 84 mm | 85 mm | 86 mm | 87 mm | 88 mm | 89 mm | 90 mm | 91 mm | 92 mm | 93 mm | 94 mm | 95 mm | 96 mm | 97 mm | 98 mm | 99 mm | 100 mm |
| centimeter | 0.1 cm | 0.2 cm | 0.3 cm | 0.4 cm | 0.5 cm | 0.6 cm | 0.7 cm | 0.8 cm | 0.9 cm | 1 cm | 1.1 cm | 1.2 cm | 1.3 cm | 1.4 cm | 1.5 cm | 1.6 cm | 1.7 cm | 1.8 cm | 1.9 cm | 2 cm | 2.1 cm | 2.2 cm | 2.3 cm | 2.4 cm | 2.5 cm | 2.6 cm | 2.7 cm | 2.8 cm | 2.9 cm | 3 cm | 3.1 cm | 3.2 cm | 3.3 cm | 3.4 cm | 3.5 cm | 3.6 cm | 3.7 cm | 3.8 cm | 3.9 cm | 4 cm | 4.1 cm | 4.2 cm | 4.3 cm | 4.4 cm | 4.5 cm | 4.6 cm | 4.7 cm | 4.8 cm | 4.9 cm | 5 cm | 5.1 cm | 5.2 cm | 5.3 cm | 5.4 cm | 5.5 cm | 5.6 cm | 5.7 cm | 5.8 cm | 5.9 cm | 6 cm | 6.1 cm | 6.2 cm | 6.3 cm | 6.4 cm | 6.5 cm | 6.6 cm | 6.7 cm | 6.8 cm | 6.9 cm | 7 cm | 7.1 cm | 7.2 cm | 7.3 cm | 7.4 cm | 7.5 cm | 7.6 cm | 7.7 cm | 7.8 cm | 7.9 cm | 8 cm | 8.1 cm | 8.2 cm | 8.3 cm | 8.4 cm | 8.5 cm | 8.6 cm | 8.7 cm | 8.8 cm | 8.9 cm | 9 cm | 9.1 cm | 9.2 cm | 9.3 cm | 9.4 cm | 9.5 cm | 9.6 cm | 9.7 cm | 9.8 cm | 9.9 cm | 10 cm |
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 ≡ 0.1 centimeters | 4 millimeters ≡ 0.4 centimeters |
| 1.5 millimeters ≡ 0.15 centimeters | 4.5 millimeters ≡ 0.45 centimeters |
| 2 millimeters ≡ 0.2 centimeters | 5 millimeters ≡ 0.5 centimeters |
| 2.5 millimeters ≡ 0.25 centimeters | 5.5 millimeters ≡ 0.55 centimeters |
| 3 millimeters ≡ 0.3 centimeters | 6 millimeters ≡ 0.6 centimeters |
A centimetre (international spelling as used by the International Bureau of Weights and Measures; symbol cm) or centimeter (American spelling) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of 1/100 . The centimetre was the base unit of length in the now deprecated centimetre–gram–second (CGS) system of units.
| 1 centimeters ≡ 10 millimeters | 4 centimeters ≡ 40 millimeters |
| 1.5 centimeters ≡ 15 millimeters | 4.5 centimeters ≡ 45 millimeters |
| 2 centimeters ≡ 20 millimeters | 5 centimeters ≡ 50 millimeters |
| 2.5 centimeters ≡ 25 millimeters | 5.5 centimeters ≡ 55 millimeters |
| 3 centimeters ≡ 30 millimeters | 6 centimeters ≡ 60 millimeters |
| 1 millimeters ≡ 0.1 centimeters |
| 1 centimeters ≡ 10 millimeters |