The Inches to Centimeters Formula
The conversion is simple: multiply inches by 2.54 to get centimeters.
Conversion Formula
Centimeters = Inches × 2.54
This is an exact conversion defined by international agreement since 1959.
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Use our free Inches to Centimeters converter for instant, accurate results.
📏Convert in → cmInches to Centimeters Calculator
Enter any measurement in inches to convert it to centimeters:
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1 in = 0 cm
Common Inches to Centimeters Conversions
Quick reference for frequently needed measurements:
| Inches | Centimeters | Common Use |
|---|---|---|
| 1 | 2.54 | Base unit |
| 6 | 15.24 | Small ruler |
| 12 | 30.48 | One foot |
| 24 | 60.96 | Two feet |
| 36 | 91.44 | One yard |
| 48 | 121.92 | Four feet |
| 72 | 182.88 | Six feet (average height) |
Converting Fractional Inches
Many measurements use fractions like 1/2, 1/4, or 1/8 inch:
| Fraction (inches) | Decimal (inches) | Centimeters |
|---|---|---|
| 1/8 | 0.125 | 0.3175 |
| 1/4 | 0.25 | 0.635 |
| 3/8 | 0.375 | 0.9525 |
| 1/2 | 0.5 | 1.27 |
| 5/8 | 0.625 | 1.5875 |
| 3/4 | 0.75 | 1.905 |
| 7/8 | 0.875 | 2.2225 |
❓Frequently Asked Questions
Exactly 2.54 centimeters. This is the international standard definition of an inch.