How to convert centimeters to inches
The formula is inches = cm ÷ 2.54. The converter applies it with full precision and shows the result as you type, so there is nothing to memorize and no rounding surprises.
The values below cover the conversions people look up most, so often the answer is already on this page.
- 1 cm = 0.3937 in
- 2.54 cm = exactly 1 in
- 10 cm = 3.937 in
- 30 cm = 11.811 in, about a school ruler
- 100 cm = 39.37 in, just over a yard
- 170 cm = 66.93 in, about 5 ft 7 in