Inches to centimeters
centimeters = inches × 2.54
Reverse: centimeters to inches
How to convert inches to centimeters
One inch is 2.54 centimeters, so multiply the number of inches by 2.54. For example, 20 inches is 20 × 2.54 = 50.8 centimeters. To go back, divide by the same number, or multiply by 0.39370079.
Quick estimate
Multiplying by about 2.5 gets within 1.6% of the exact answer, which is enough to check that a result makes sense.
Where it comes up
Length conversions come up in DIY and building plans, running and cycling distances, maps, clothing sizes and travel between countries that use metric and imperial units.
| inches | centimeters |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 6 in | 15.24 cm |
| 7 in | 17.78 cm |
| 8 in | 20.32 cm |
| 9 in | 22.86 cm |
| 10 in | 25.4 cm |
| 11 in | 27.94 cm |
| 12 in | 30.48 cm |
| 13 in | 33.02 cm |
| 14 in | 35.56 cm |
| 15 in | 38.1 cm |
| 16 in | 40.64 cm |
| 17 in | 43.18 cm |
| 18 in | 45.72 cm |
| 19 in | 48.26 cm |
| 20 in | 50.8 cm |
| 25 in | 63.5 cm |
| 30 in | 76.2 cm |
| 40 in | 101.6 cm |
| 50 in | 127 cm |
| 60 in | 152.4 cm |
| 70 in | 177.8 cm |
| 75 in | 190.5 cm |
| 80 in | 203.2 cm |
| 90 in | 228.6 cm |
| 100 in | 254 cm |
| 120 in | 304.8 cm |
| 150 in | 381 cm |
| 200 in | 508 cm |
| 250 in | 635 cm |
| 300 in | 762 cm |
| 400 in | 1,016 cm |
| 500 in | 1,270 cm |
| 750 in | 1,905 cm |
| 1,000 in | 2,540 cm |
| 1,500 in | 3,810 cm |
| 2,000 in | 5,080 cm |
| 5,000 in | 12,700 cm |
| 10,000 in | 25,400 cm |
Questions
How many centimeters are in a inch?
2.54 centimeters.
How do I convert inches to centimeters in a spreadsheet?
Put the value in A1 and type =A1*2.54, then fill the formula down the column.
Are the values in the table exact?
They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.