CloudCalcAppInches to Centimeters Converter
Convert inches to centimeters instantly. 1 inch equals exactly 2.54 centimeters - enter a length in inches below to get the equivalent in centimeters, useful for following metric specifications or measurements.
Quick answer
Formula
centimeters = inches × 2.54
Quick mental-math estimate
Worked Example: Convert 15 Inches to Centimeters
- Given1 inch = 2.54 centimeters, exactly.
- Formulacentimeters = inches × 2.54
- Substitutecentimeters = 15 × 2.54
- Answer15 inches = 38.1 centimeters.
Quick Examples
1 in = 2.54 cm
1 in = 2.54 cm - the exact definition this converter uses.
2 in = 5.08 cm
2 in = 5.08 cm.
5 in = 12.7 cm
5 in = 12.7 cm.
10 in = 25.4 cm
10 in = 25.4 cm.
12 in = 30.48 cm
12 in = 30.48 cm - exactly 1 foot.
100 in = 254 cm
100 in = 254 cm.
Conversion Table
| Inches (in) | Centimeters (cm) |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 3 | 7.62 |
| 4 | 10.16 |
| 5 | 12.7 |
| 6 | 15.24 |
| 8 | 20.32 |
| 10 | 25.4 |
| 12 | 30.48 |
| 15 | 38.1 |
| 20 | 50.8 |
| 24 | 60.96 |
| 30 | 76.2 |
| 36 | 91.44 |
Common Measurement Reference (Body & Garment)
These are example measurement values for converting a body or garment dimension you've measured yourself - not clothing size labels. Sizing systems (S/M/L, numeric sizes) vary by brand and country and are not a direct unit conversion.
| Inches (in) | Centimeters (cm) |
|---|---|
| 24 | 60.96 |
| 26 | 66.04 |
| 28 | 71.12 |
| 30 | 76.2 |
| 32 | 81.28 |
| 34 | 86.36 |
| 36 | 91.44 |
| 38 | 96.52 |
| 40 | 101.6 |
Unit Definitions
Inches (in)
A US customary and imperial unit equal to exactly 2.54 centimeters.
imperial system
- Screen and display sizes
- Woodworking and construction
- Paper sizes and printing
Centimeters (cm)
One hundredth of a meter - a convenient metric unit for everyday, hand-held-scale objects.
metric system
- Body height and clothing sizes
- Furniture and room dimensions
- Craft and sewing measurements
FAQ
How do you convert inches to centimeters?
Multiply the length in inches by 2.54. For example, 5 inches × 2.54 = 12.7 centimeters.
How many centimeters are in 1 inch?
1 inch equals exactly 2.54 centimeters.
Can I convert clothing sizes from inches to cm?
You can directly convert a body or garment measurement you've taken yourself (e.g. a 32-inch waist = 81.28 cm), but clothing size labels like S/M/L or numeric sizes are not a direct unit conversion - they vary by brand, country, and garment fit.
Is 1 inch exactly 2.54 cm?
Yes. The international inch has been defined as exactly 2.54 centimeters since 1959, so this conversion is exact, not a rounded approximation.
When is inches-to-centimeters conversion commonly used?
It's useful when a US/imperial measurement (screen size, tool dimension, height) needs to be compared against or entered into a metric specification, form, or product listing.
Displayed results are rounded to a maximum of 4 decimal places for readability (extended only in the rare case a nonzero value would otherwise display as “0”), and whole-number results are shown without unnecessary decimals. The conversion factor and formula above are the exact relationship - only the calculator's displayed output is rounded.
Need a different unit? Length Converter supports many other unit conversions.