| centimeter | 1 cm | 2 cm | 3 cm | 4 cm | 5 cm | 6 cm | 7 cm | 8 cm | 9 cm | 10 cm | 11 cm | 12 cm | 13 cm | 14 cm | 15 cm | 16 cm | 17 cm | 18 cm | 19 cm | 20 cm | 21 cm | 22 cm | 23 cm | 24 cm | 25 cm | 26 cm | 27 cm | 28 cm | 29 cm | 30 cm | 31 cm | 32 cm | 33 cm | 34 cm | 35 cm | 36 cm | 37 cm | 38 cm | 39 cm | 40 cm | 41 cm | 42 cm | 43 cm | 44 cm | 45 cm | 46 cm | 47 cm | 48 cm | 49 cm | 50 cm | 51 cm | 52 cm | 53 cm | 54 cm | 55 cm | 56 cm | 57 cm | 58 cm | 59 cm | 60 cm | 61 cm | 62 cm | 63 cm | 64 cm | 65 cm | 66 cm | 67 cm | 68 cm | 69 cm | 70 cm | 71 cm | 72 cm | 73 cm | 74 cm | 75 cm | 76 cm | 77 cm | 78 cm | 79 cm | 80 cm | 81 cm | 82 cm | 83 cm | 84 cm | 85 cm | 86 cm | 87 cm | 88 cm | 89 cm | 90 cm | 91 cm | 92 cm | 93 cm | 94 cm | 95 cm | 96 cm | 97 cm | 98 cm | 99 cm | 100 cm |
| millimeter | 10 mm | 20 mm | 30 mm | 40 mm | 50 mm | 60 mm | 70 mm | 80 mm | 90 mm | 100 mm | 110 mm | 120 mm | 130 mm | 140 mm | 150 mm | 160 mm | 170 mm | 180 mm | 190 mm | 200 mm | 210 mm | 220 mm | 230 mm | 240 mm | 250 mm | 260 mm | 270 mm | 280 mm | 290 mm | 300 mm | 310 mm | 320 mm | 330 mm | 340 mm | 350 mm | 360 mm | 370 mm | 380 mm | 390 mm | 400 mm | 410 mm | 420 mm | 430 mm | 440 mm | 450 mm | 460 mm | 470 mm | 480 mm | 490 mm | 500 mm | 510 mm | 520 mm | 530 mm | 540 mm | 550 mm | 560 mm | 570 mm | 580 mm | 590 mm | 600 mm | 610 mm | 620 mm | 630 mm | 640 mm | 650 mm | 660 mm | 670 mm | 680 mm | 690 mm | 700 mm | 710 mm | 720 mm | 730 mm | 740 mm | 750 mm | 760 mm | 770 mm | 780 mm | 790 mm | 800 mm | 810 mm | 820 mm | 830 mm | 840 mm | 850 mm | 860 mm | 870 mm | 880 mm | 890 mm | 900 mm | 910 mm | 920 mm | 930 mm | 940 mm | 950 mm | 960 mm | 970 mm | 980 mm | 990 mm | 1 000 mm |
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 |
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 |
| 1 centimeters ≡ 10 millimeters |
| 1 millimeters ≡ 0.1 centimeters |