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Convert inches (in) to centimeters (cm) instantly. Full chart with formula and reverse direction.
An inch (in) is defined as exactly 2.54 centimeters. To convert in to cm, multiply by 2.54; to convert cm to in, divide by 2.54.
1 in equals 2.540 cm.
| Inches (in) | Centimeters (cm) |
|---|---|
| 0.5 in | 1.270 cm |
| 1 in | 2.540 cm |
| 1.5 in | 3.810 cm |
| 2 in | 5.080 cm |
| 2.5 in | 6.350 cm |
| 3 in | 7.620 cm |
| 4 in | 10.160 cm |
| 5 in | 12.700 cm |
| 6 in | 15.240 cm |
| 8 in | 20.320 cm |
| 10 in | 25.400 cm |
| 12 in | 30.480 cm |
| 15 in | 38.100 cm |
| 18 in | 45.720 cm |
| 20 in | 50.800 cm |
| 24 in | 60.960 cm |
| 30 in | 76.200 cm |
| 36 in | 91.440 cm |
| 48 in | 121.92 cm |
| 60 in | 152.40 cm |
| 72 in | 182.88 cm |
| 100 in | 254.00 cm |
Chart values use the exact factor 1 in = 2.54 cm.
Formula
cm = in × 2.54 | in = cm ÷ 2.54in = inch — US/UK customary unit (1 in = 2.54 cm, exact since 1959)
cm = centimeter — SI unit, 1/100 of a meter (1 cm = 10 mm)
Worked Example
Convert 12 inches (1 foot) to centimeters
Did you know? The US and UK used to have slightly different inches — the US 'survey' inch (≈25.40005 mm) and the British inch (≈25.39997 mm). The International Yard and Pound Agreement of 1959 unified the inch at exactly 25.4 mm (2.54 cm).
Sources
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