Centimeters to Inches Converter
Convert centimeters to inches instantly. 1 cm equals 0.393701 in. Use the converter above, or the formula, worked example and table below for common lengths.
Live formula: 1 cm → in
See all Length & Distance Converter conversions →
How to Use the Centimeters to Inches Converter
- 1. Enter a value in the left input field — the converter is already set to Centimeter (cm) to Inch (in).
- 2. Read the instant converted value and review the live formula line.
- 3. Use the swap button to reverse the direction, or copy either amount.
- 4. Check the table below for common cm to inches conversions.
Centimeters to Inches Converter Formula
inches = centimeters ÷ 2.54
Worked example: 180 cm ÷ 2.54 = 70.8661 in — 180 cm is 5 ft 10.87 in — a common height conversion.
Centimeter (cm) to Inch (in) Conversion Table
| From Unit | To Unit | Input | Result |
|---|---|---|---|
| Centimeter (cm) | Inch (in) | 1 | 0.393701 |
| Centimeter (cm) | Inch (in) | 2.5 | 0.984252 |
| Centimeter (cm) | Inch (in) | 5 | 1.968504 |
| Centimeter (cm) | Inch (in) | 10 | 3.937008 |
| Centimeter (cm) | Inch (in) | 20 | 7.874016 |
| Centimeter (cm) | Inch (in) | 30 | 11.811024 |
| Centimeter (cm) | Inch (in) | 50 | 19.685039 |
| Centimeter (cm) | Inch (in) | 100 | 39.370079 |
Did You Know?
- The inch is defined as exactly 2.54 cm, a definition agreed internationally in 1959.
- Screen sizes are measured diagonally in inches, while most of the world measures height in centimeters.
Frequently Asked Questions
How many inches is 1 cm?
1 centimeter equals 0.393701 inches, because 1 inch is defined as exactly 2.54 cm.
How do I convert cm to inches in my head?
Divide the centimeters by 2.54. For a quick estimate, multiply by 0.4 — for example, 180 cm × 0.4 ≈ 72 in, while the exact answer is 70.87 in.
What is 180 cm in feet and inches?
180 cm equals 70.87 inches, which is 5 feet 10.87 inches.
Is the inch defined in metric units?
Yes. Since 1959, the international inch has been defined as exactly 2.54 centimeters, so the conversion is exact, not approximate.