Centimeters vs Inches
Compare centimeters and inches side by side, convert in both directions, and see the exact factor - Length units.
= 0.393701 in
= 2.54 cm
1 centimeter = 0.393701 in · 1 inch = 2.54 cm
The Centimeters is the smaller unit - the same amount has a smaller number when measured in it.
| Centimeters (cm) | Inches (in) | Inches (in) | Centimeters (cm) |
|---|---|---|---|
| 1 | 0.393701 | 1 | 2.54 |
| 2 | 0.787402 | 2 | 5.08 |
| 5 | 1.9685 | 5 | 12.7 |
| 10 | 3.937 | 10 | 25.4 |
| 25 | 9.8425 | 25 | 63.5 |
| 50 | 19.685 | 50 | 127 |
| 100 | 39.3701 | 100 | 254 |
| 250 | 98.4252 | 250 | 635 |
| 500 | 196.9 | 500 | 1,270 |
| 1000 | 393.7 | 1000 | 2,540 |
Quick Answer
1 centimeter (cm) = 0.393701 inches (in), and 1 inch = 2.54 centimeters. Inches is the larger unit, so the same physical amount needs a bigger number when measured in centimeters. Convert either way with the live tool below or the dedicated converter pages.
Key Facts
- 1 centimeter (cm) = 0.393701 in
- 1 inch (in) = 2.54 cm
- Conversion is exact multiplication - no rounding in the factor
- Table below covers common values in both directions
- Dedicated converters: cm→in and in→cm pages with live tools
Frequently Asked Questions
Which is bigger, a centimeter or a inch?
One centimeter equals 0.393701 in, and one inch equals 2.54 cm. The unit with the larger factor is the physically bigger one.
How do I convert centimeters to inches?
Multiply by the factor: value in in = value in cm × 0.393701. Example: 5 cm = 1.9685 in. Reverse: divide by 0.393701 (or multiply by 2.54).
Why are centimeters and inches different?
They come from different measurement systems - Centimeters belongs to the metric (SI) world, Inches to the US customary world (or another convention). The conversion is exact: 0.393701 in per centimeter, no rounding needed for the factor itself.
Is there a quick way to convert without a calculator?
Memorize the 1-to factor: 1 centimeter ≈ 0.393701 in. Then multiply. For 2 cm that's ≈ 0.787402 in.
Frequently Asked Questions
One centimeter equals 0.393701 in, and one inch equals 2.54 cm. The unit with the larger factor is the physically bigger one.
Multiply by the factor: value in in = value in cm × 0.393701. Example: 5 cm = 1.9685 in. Reverse: divide by 0.393701 (or multiply by 2.54).
They come from different measurement systems - Centimeters belongs to the metric (SI) world, Inches to the US customary world (or another convention). The conversion is exact: 0.393701 in per centimeter, no rounding needed for the factor itself.
Memorize the 1-to factor: 1 centimeter ≈ 0.393701 in. Then multiply. For 2 cm that's ≈ 0.787402 in.