| 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) |
| centimeter | 0.04 cm | 0.08 cm | 0.12 cm | 0.16 cm | 0.2 cm | 0.24 cm | 0.28 cm | 0.32 cm | 0.36 cm | 0.4 cm | 0.44 cm | 0.48 cm | 0.52 cm | 0.56 cm | 0.6 cm | 0.64 cm | 0.68 cm | 0.72 cm | 0.76 cm | 0.8 cm | 0.84 cm | 0.88 cm | 0.92 cm | 0.96 cm | 1 cm | 1.04 cm | 1.08 cm | 1.12 cm | 1.16 cm | 1.2 cm | 1.24 cm | 1.28 cm | 1.32 cm | 1.36 cm | 1.4 cm | 1.44 cm | 1.48 cm | 1.52 cm | 1.56 cm | 1.6 cm | 1.64 cm | 1.68 cm | 1.72 cm | 1.76 cm | 1.8 cm | 1.84 cm | 1.88 cm | 1.92 cm | 1.96 cm | 2 cm | 2.04 cm | 2.08 cm | 2.12 cm | 2.16 cm | 2.2 cm | 2.24 cm | 2.28 cm | 2.32 cm | 2.36 cm | 2.4 cm | 2.44 cm | 2.48 cm | 2.52 cm | 2.56 cm | 2.6 cm | 2.64 cm | 2.68 cm | 2.72 cm | 2.76 cm | 2.8 cm | 2.84 cm | 2.88 cm | 2.92 cm | 2.96 cm | 3 cm | 3.04 cm | 3.08 cm | 3.12 cm | 3.16 cm | 3.2 cm | 3.24 cm | 3.28 cm | 3.32 cm | 3.36 cm | 3.4 cm | 3.44 cm | 3.48 cm | 3.52 cm | 3.56 cm | 3.6 cm | 3.64 cm | 3.68 cm | 3.72 cm | 3.76 cm | 3.8 cm | 3.84 cm | 3.88 cm | 3.92 cm | 3.96 cm | 4 cm |
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.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| metric inch | in (metric) | = 0.016 in | = 0.0004 m | Metric system SI |
| metric inches | centimeters | metric inches | centimeters |
|---|---|---|---|
| 1 | = 0.04 | 4 | = 0.16 |
| 1.5 | = 0.06 | 4.5 | = 0.18 |
| 2 | = 0.08 | 5 | = 0.2 |
| 2.5 | = 0.1 | 5.5 | = 0.22 |
| 3 | = 0.12 | 6 | = 0.24 |
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.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| centimeter | cm | ≡ 1×10-2 m ≡ 0.01 m | ≡ 1×10-2 m ≡ 0.01 m | Metric system SI |
| centimeters | metric inches | centimeters | metric inches |
|---|---|---|---|
| 1 | = 25 | 4 | = 100 |
| 1.5 | = 37.5 | 4.5 | = 112.5 |
| 2 | = 50 | 5 | = 125 |
| 2.5 | = 62.5 | 5.5 | = 137.5 |
| 3 | = 75 | 6 | = 150 |
| metric inches | centimeters |
|---|---|
| 1 | = 0.04 |
| 25 | = 1 |
| 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 …) |