| metric inch | 1 in (metric) | 2 in (metric) | 3 in (metric) | 4 in (metric) | 5 in (metric) | 6 in (metric) | 7 in (metric) | 8 in (metric) | 9 in (metric) | 10 in (metric) | 11 in (metric) | 12 in (metric) | 13 in (metric) | 14 in (metric) | 15 in (metric) | 16 in (metric) | 17 in (metric) | 18 in (metric) | 19 in (metric) | 20 in (metric) | 21 in (metric) | 22 in (metric) | 23 in (metric) | 24 in (metric) | 25 in (metric) | 26 in (metric) | 27 in (metric) | 28 in (metric) | 29 in (metric) | 30 in (metric) | 31 in (metric) | 32 in (metric) | 33 in (metric) | 34 in (metric) | 35 in (metric) | 36 in (metric) | 37 in (metric) | 38 in (metric) | 39 in (metric) | 40 in (metric) | 41 in (metric) | 42 in (metric) | 43 in (metric) | 44 in (metric) | 45 in (metric) | 46 in (metric) | 47 in (metric) | 48 in (metric) | 49 in (metric) | 50 in (metric) | 51 in (metric) | 52 in (metric) | 53 in (metric) | 54 in (metric) | 55 in (metric) | 56 in (metric) | 57 in (metric) | 58 in (metric) | 59 in (metric) | 60 in (metric) | 61 in (metric) | 62 in (metric) | 63 in (metric) | 64 in (metric) | 65 in (metric) | 66 in (metric) | 67 in (metric) | 68 in (metric) | 69 in (metric) | 70 in (metric) | 71 in (metric) | 72 in (metric) | 73 in (metric) | 74 in (metric) | 75 in (metric) | 76 in (metric) | 77 in (metric) | 78 in (metric) | 79 in (metric) | 80 in (metric) | 81 in (metric) | 82 in (metric) | 83 in (metric) | 84 in (metric) | 85 in (metric) | 86 in (metric) | 87 in (metric) | 88 in (metric) | 89 in (metric) | 90 in (metric) | 91 in (metric) | 92 in (metric) | 93 in (metric) | 94 in (metric) | 95 in (metric) | 96 in (metric) | 97 in (metric) | 98 in (metric) | 99 in (metric) | 100 in (metric) |
| millimeter | 0.4 mm | 0.8 mm | 1.2 mm | 1.6 mm | 2 mm | 2.4 mm | 2.8 mm | 3.2 mm | 3.6 mm | 4 mm | 4.4 mm | 4.8 mm | 5.2 mm | 5.6 mm | 6 mm | 6.4 mm | 6.8 mm | 7.2 mm | 7.6 mm | 8 mm | 8.4 mm | 8.8 mm | 9.2 mm | 9.6 mm | 10 mm | 10.4 mm | 10.8 mm | 11.2 mm | 11.6 mm | 12 mm | 12.4 mm | 12.8 mm | 13.2 mm | 13.6 mm | 14 mm | 14.4 mm | 14.8 mm | 15.2 mm | 15.6 mm | 16 mm | 16.4 mm | 16.8 mm | 17.2 mm | 17.6 mm | 18 mm | 18.4 mm | 18.8 mm | 19.2 mm | 19.6 mm | 20 mm | 20.4 mm | 20.8 mm | 21.2 mm | 21.6 mm | 22 mm | 22.4 mm | 22.8 mm | 23.2 mm | 23.6 mm | 24 mm | 24.4 mm | 24.8 mm | 25.2 mm | 25.6 mm | 26 mm | 26.4 mm | 26.8 mm | 27.2 mm | 27.6 mm | 28 mm | 28.4 mm | 28.8 mm | 29.2 mm | 29.6 mm | 30 mm | 30.4 mm | 30.8 mm | 31.2 mm | 31.6 mm | 32 mm | 32.4 mm | 32.8 mm | 33.2 mm | 33.6 mm | 34 mm | 34.4 mm | 34.8 mm | 35.2 mm | 35.6 mm | 36 mm | 36.4 mm | 36.8 mm | 37.2 mm | 37.6 mm | 38 mm | 38.4 mm | 38.8 mm | 39.2 mm | 39.6 mm | 40 mm |
A metric inch is a nickname for a preferred 1⁄4 subdivision of an ISO 2848 basic module, or 1⁄12 of a metric foot measuring 25 millimetres (0.984 in). A metric inch is 0.4 millimetres (0.016 in) shorter than an inch.
The term was similarly used to refer to the historical Soviet Bloc practice of spacing integrated circuit pins at 1⁄10 of a 25 mm "metric inch" length, instead of the western practice of 1⁄10 of an imperial inch.
| 1 metric inches = 0.4 millimeters | 4 metric inches = 1.6 millimeters |
| 1.5 metric inches = 0.6 millimeters | 4.5 metric inches = 1.8 millimeters |
| 2 metric inches = 0.8 millimeters | 5 metric inches = 2 millimeters |
| 2.5 metric inches = 1 millimeters | 5.5 metric inches = 2.2 millimeters |
| 3 metric inches = 1.2 millimeters | 6 metric inches = 2.4 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 = 2.5 metric inches | 4 millimeters = 10 metric inches |
| 1.5 millimeters = 3.75 metric inches | 4.5 millimeters = 11.25 metric inches |
| 2 millimeters = 5 metric inches | 5 millimeters = 12.5 metric inches |
| 2.5 millimeters = 6.25 metric inches | 5.5 millimeters = 13.75 metric inches |
| 3 millimeters = 7.5 metric inches | 6 millimeters = 15 metric inches |
| 1 metric inches = 0.4 millimeters |
| 1 millimeters = 2.5 metric inches |