Length / cm → in
Convert Centimeters to Inches
Use centimeter measurements with inch-based sizing guides. The result uses decimal inches, so 0.5 inches means one half inch.
Reverse: Inches to Centimeters →
How to convert centimeters to inches
Length conversion changes the unit of a distance. Area and volume need squared and cubed factors; this calculator does not convert square feet or cubic feet.
Use x for the value in cm, b for the intermediate value in m, and y for the result in in.
in = cm × 0.01 ÷ 0.0254
Worked examples
30 cm ≈ 11.811023622 in
Step 1: (30 × 0.01) ≈ 0.3 m.
Step 2: 0.3 ÷ 0.0254 ≈ 11.811023622 in.60 cm ≈ 23.6220472441 in
Step 1: (60 × 0.01) ≈ 0.6 m.
Step 2: 0.6 ÷ 0.0254 ≈ 23.6220472441 in.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Centimeters
A centimeter is one hundredth of a meter. It is often used for body measurements, product dimensions, and clothing sizes.
About Inches
The international inch is exactly 0.0254 meters. Screen sizes usually describe a diagonal length in inches, not the width of a display.
Definitions and sources
Use consistent length units when carrying dimensions into construction calculations.
Centimeters to inches reference table
| Centimeters (cm) | Inches (in) |
|---|---|
| 1 | 0.393700787402 |
| 5 | 1.96850393701 |
| 10 | 3.93700787402 |
| 25 | 9.84251968504 |
| 50 | 19.6850393701 |
| 100 | 39.3700787402 |
| 1000 | 393.700787402 |
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