Centimeters to Inches
Convert centimeters to inches instantly. Change the amount or check the formula below.
More actions
Multiply cm by approximately 0.393700787 to get in.
Same value in other units View equivalents
| Unit | Equivalent value |
|---|---|
| Meters (m) | 0.05 m |
| Feet (ft) | 0.164042 ft |
| Inches (in) | 1.968504 in |
| Millimeters (mm) | 50 mm |
| Kilometers (km) | 0.00005 km |
How to convert cm to in
Multiply cm by approximately 0.393700787 to get in.
Enter your value in the converter. The displayed result updates immediately. All math is performed in your browser. You can use the copy function to save a result or share a linked example with a colleague.
Quick reference table
Choose a value below to try it in the live converter.
| Centimeters | Inches |
|---|---|
| 0.3937008 in | |
| 0.7874016 in | |
| 1.9685039 in | |
| 3.9370079 in | |
| 9.8425197 in | |
| 19.6850394 in | |
| 39.3700787 in |
Results use the length dimension. Choose compatible units only; the precision selector changes display rounding, not the underlying factor.
Verify cm to in
Using the stated definitions, 1 cm ≈ 0.393700787 in and 10 cm ≈ 3.937007874 in. The live converter accepts your own value; the table provides additional check points.
Conversion method
Multiply cm by approximately 0.393700787 to get in.
International foot and inch definitions
The international inch is exactly 0.0254 meter and the international foot is exactly 0.3048 meter. For construction plans or survey data, verify which foot standard the source uses.
Length measurements are one-dimensional. Do not reuse a length factor for square feet or cubic feet: those units require squared or cubed factors.
Need the other direction? Convert in to cm.
Reference: NIST conversion factors. Calculation and display rounding are separate. See how we calculate.
Centimeters to decimal and fractional inches
The decimal-inch value and the nearest 1/16-inch ruler mark are different display formats.
| Centimeters | Decimal inches | Nearest 1/16 inch |
|---|---|---|
| 1 cm | 0.393701 in | ≈ 0 ft 0 3/8 in |
| 2.54 cm | 1 in | = 0 ft 1 in |
| 5 cm | 1.968504 in | ≈ 0 ft 1 15/16 in |
| 10 cm | 3.937008 in | ≈ 0 ft 3 15/16 in |
| 30 cm | 11.811024 in | ≈ 0 ft 11 13/16 in |
1 international inch = exactly 2.54 cm. Fractional ruler marks are rounded for reading; use decimal inches for subsequent calculations.
Practical questions: centimeters to inches
How many centimeters make exactly one inch?
2.54 cm = 1 in. The international inch definition is exact.
Is 2.5 centimeters exactly one inch?
No. 2.5 cm ≈ 0.984252 in. A rounded ruler reading is not the same as the exact 2.54 cm definition.
Need another compatible unit? convert inches back to centimeters. Check definitions and rounding.
Methodology: fixed SI definitions and standards-based factors. For safety-critical use, verify the required industry specification. Check definitions, conventions and sources.