How to convert centimeters to inches
Useful for product dimensions, craft, clothing, and metric-to-customary measurements. Multiply the centimeter value by the exact unit relationship shown below. CalcOS evaluates through the meter so this route and its inverse always share one certified definition.
in = cm × 0.393700787402
Worked example: 10 cm = 3.93700787402 in.
centimeters to inches conversion table
| centimeter (cm) | inch (in) |
|---|---|
| 1 | 0.393700787402 |
| 5 | 1.96850393701 |
| 10 | 3.93700787402 |
| 25 | 9.84251968504 |
| 50 | 19.6850393701 |
| 100 | 39.3700787402 |
Definitions and precision
The international inch, foot, yard, and mile are exact consequences of 1 inch = 0.0254 meter. Metric prefixes are exact powers of ten. Results may still display rounded decimals because many inverse relationships are repeating numbers.
Related length conversions
Sources: BIPM SI Brochure and NIST Handbook 44, Appendix C. Also see the complete Length Converter guide.