Inches to CM Converter
Fast, accurate, and easy-to-use inch to cm conversion tool.
No ads, no distractions—just instant results.
Quick Reference: Common Conversions
Bookmark this table for instant access to frequently used conversions:
| Inches | Centimeters | Common Use |
|---|---|---|
| 1" | 2.54 cm | Thumb width |
| 2" | 5.08 cm | Golf ball diameter |
| 6" | 15.24 cm | Dollar bill length |
| 12" | 30.48 cm | Standard ruler |
| 24" | 60.96 cm | Small monitor |
| 27" | 68.58 cm | Desktop monitor |
| 32" | 81.28 cm | Small TV |
| 36" | 91.44 cm | Yard stick |
| 48" | 121.92 cm | Standard door width |
| 55" | 139.7 cm | Large TV |
| 60" | 152.4 cm | 5 feet (average height) |
| 72" | 182.88 cm | 6 feet (tall person) |
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How to Convert Inches to Centimeters
Understanding the conversion formula
To convert inches to cm:
Multiply the inch value by 2.54
To convert cm to inches:
Divide the cm value by 2.54
Why 2.54?
The inch is defined as exactly 2.54 centimeters by international agreement. This conversion factor has been standardized since 1959, ensuring consistency in measurements worldwide.
The inch originated from the width of a human thumb, while the centimeter is based on the metric system (1/100 of a meter). Today, both are precisely defined for scientific and commercial use.
The international inch is exactly 25.4 millimeters, making conversions between imperial and metric systems mathematically precise.
Frequently Asked Questions
Everything you need to know about inch to cm conversion