Inches to CM Converter
Convert inches to centimeters instantly using the exact formula: centimeters = inches × 2.54. You can also convert centimeters back to inches, check height in centimeters, and use the quick reference charts below.
Exact Conversion
1 inch = 2.54 centimeters exactly.
1 cm ≈ 0.3937 inches.
Simple Formula
Inches to cm: multiply by 2.54.
CM to inches: divide by 2.54.
Best Uses
Useful for height, clothing, screens, paper sizes, product specs, schoolwork and international measurements.
Choose Conversion Mode
Inches ↔ Centimeters Converter
How to Convert Inches to Centimeters
The inch-to-centimeter conversion is exact: 1 inch = 2.54 centimeters. To convert inches to centimeters, multiply the number of inches by 2.54. To convert centimeters to inches, divide centimeters by 2.54.
CM to inches: inches = cm ÷ 2.54
Example: 10 inches × 2.54 = 25.4 cm
This page is built for fast conversions and practical use cases: height, clothing sizes, paper dimensions, screen sizes, product measurements and school math problems. Use the calculator above for exact values and the tables below for common lookups.
Quick Reference Tables
Inches to Centimeters
| Inches | Centimeters |
|---|---|
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 12 in (1 ft) | 30.48 cm |
| 24 in | 60.96 cm |
| 36 in (1 yd) | 91.44 cm |
Centimeters to Inches
| Centimeters | Inches |
|---|---|
| 1 cm | 0.394 in |
| 5 cm | 1.969 in |
| 10 cm | 3.937 in |
| 25 cm | 9.843 in |
| 30 cm | 11.811 in |
| 50 cm | 19.685 in |
| 100 cm (1 m) | 39.370 in |
Practical Applications
Clothing Sizes
Waist 32": 81.3 cm
Waist 34": 86.4 cm
Chest 40": 101.6 cm
Inseam 32": 81.3 cm
Screen Sizes
15" Laptop: 38.1 cm
27" Monitor: 68.6 cm
55" TV: 139.7 cm
75" TV: 190.5 cm
Measurements
1 inch: 2.54 cm
1 foot: 30.48 cm
1 yard: 91.44 cm
1 meter: 39.37 in
Conversion Formulas
Inches to Centimeters
cm = inches × 2.54
Why 2.54?
1 inch is defined as exactly 2.54 cm.
This is the standard inch-to-centimeter conversion.
Examples:
10 inches × 2.54 = 25.4 cm
20 inches × 2.54 = 50.8 cm
Centimeters to Inches
inches = cm ÷ 2.54
inches = cm × 0.3937
Related conversions:
1 cm = 0.3937 inches
1 cm = 10 mm
1 cm = 0.01 meters
Examples:
25 cm ÷ 2.54 = 9.843 inches
50 cm ÷ 2.54 = 19.685 inches
Common Mistakes to Avoid
Using 2.5 instead of 2.54
2.5 is a rough estimate. Use 2.54 for accurate conversions, especially product sizes, schoolwork, medical forms or engineering measurements.
Confusing inches with feet
Feet must be converted to inches first. For height, 5 ft 10 in is 70 inches, then 70 × 2.54 = 177.8 cm.
Rounding too early
Keep extra decimals during the calculation and round the final answer only when needed.
Related RevisionTown Converters
Use these related tools when your measurement starts in another unit or you need a broader conversion workflow.
Inches to CM FAQs
How do you convert inches to centimeters?
Multiply inches by 2.54. For example, 10 inches × 2.54 = 25.4 centimeters.
How many centimeters are in one inch?
One inch is exactly 2.54 centimeters.
How do you convert centimeters to inches?
Divide centimeters by 2.54. For example, 25.4 cm ÷ 2.54 = 10 inches.
What is 12 inches in centimeters?
12 inches equals 30.48 centimeters because 12 × 2.54 = 30.48.
What is 5 feet 10 inches in centimeters?
5 feet 10 inches equals 70 inches. 70 × 2.54 = 177.8 centimeters.
Is 1 inch exactly 2.54 cm?
Yes. One inch is exactly 2.54 centimeters, so the calculator uses 2.54 as the conversion factor.
