CM to Inches Converter
Convert centimeters to inches instantly with reference table.
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1 cm = 0.3937007874 in
| Centimeters (cm) | Inches (in) |
|---|---|
| 1 | 0.3937007874 |
| 2 | 0.7874015748 |
| 5 | 1.968503937 |
| 10 | 3.937007874 |
| 15 | 5.905511811 |
| 20 | 7.874015748 |
| 25 | 9.842519685 |
| 50 | 19.68503937 |
| 75 | 29.52755906 |
| 100 | 39.37007874 |
| 150 | 59.05511811 |
| 200 | 78.74015748 |
| 250 | 98.42519685 |
| 500 | 196.8503937 |
| 1,000 | 393.7007874 |
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How to Convert CM to Inches
Formula: inches = cm ÷ 2.54
The relationship is exact by international standard (defined since 1959): 1 inch = 2.54 centimeters, precisely. So 10 cm ÷ 2.54 = 3.937 inches.
| Centimeters | Inches |
|---|---|
| 5 cm | 1.97 in |
| 10 cm | 3.94 in |
| 15 cm | 5.91 in |
| 20 cm | 7.87 in |
| 25 cm | 9.84 in |
| 30 cm | 11.81 in |
| 35 cm | 13.78 in |
| 40 cm | 15.75 in |
| 45 cm | 17.72 in |
| 50 cm | 19.69 in |
| 55 cm | 21.65 in |
| 60 cm | 23.62 in |
| 65 cm | 25.59 in |
| 70 cm | 27.56 in |
| 75 cm | 29.53 in |
| 80 cm | 31.50 in |
| 85 cm | 33.46 in |
| 90 cm | 35.43 in |
| 95 cm | 37.40 in |
| 100 cm | 39.37 in |
| 110 cm | 43.31 in |
| 120 cm | 47.24 in |
| 150 cm | 59.06 in |
| 180 cm | 70.87 in |
| 200 cm | 78.74 in |
When You Need This Conversion
Monitor and TV screen sizes are measured diagonally in inches worldwide, but product specifications often list dimensions in centimeters. Height conversion is another common use — 183 cm = 72 inches = 6'0".
International clothing sizes frequently use centimeters for measurements like waist, chest, and inseam, while US sizes reference inches. When shopping online from international retailers, converting between cm and inches helps ensure the right fit.
For more length conversions, see our Length Converter.
When to use this
You are shopping online from a European retailer and the product dimensions are listed in centimeters, but you think in inches. Or you are reading a medical report that lists a measurement in centimeters and you want to visualize it in a unit you are familiar with. CM-to-inches conversion comes up constantly when crossing between metric and imperial systems — in furniture shopping, body measurements for clothing, screen sizes, and fitness tracking.
The formula is straightforward: divide centimeters by 2.54 to get inches. One inch is defined as exactly 2.54 centimeters — this is not an approximation but a precise international standard established in 1959. So 10 cm is exactly 3.937 inches, 30 cm is exactly 11.811 inches, and 100 cm is exactly 39.37 inches. The converter handles the division so you do not have to.
Good to know
The conversion factor is exact. 1 inch = 2.54 cm is a defined relationship, not a measured approximation. This means every CM-to-inches conversion is mathematically precise — there is no rounding error in the factor itself, only in how many decimal places you choose to display.
Body height is the most common use case. If someone tells you they are 175 cm tall, that is about 5 feet 8.9 inches. Clothing size charts from international brands almost always list measurements in centimeters, so knowing a few anchor points (like 2.5 cm per inch) helps you estimate quickly.
Screen sizes are always measured diagonally in inches. If a product listing shows a screen as 39.6 cm, divide by 2.54 to get 15.6 inches — a standard laptop screen size. Monitor and TV sizes are one of the few categories where even metric countries use inches as the standard unit.
Quick Reference
| Centimeters | Inches | Common Use |
|---|---|---|
| 1 cm | 0.394 in | Fingernail width |
| 2.54 cm | 1.000 in | Exact definition |
| 5 cm | 1.969 in | Small scar, button |
| 10 cm | 3.937 in | Smartphone width |
| 15 cm | 5.906 in | Paperback book width |
| 30 cm | 11.811 in | Standard ruler |
| 60 cm | 23.622 in | Carry-on luggage height |
| 90 cm | 35.433 in | Kitchen counter height |
| 100 cm | 39.370 in | 1 meter |
| 150 cm | 59.055 in | Child's height (~4'11") |
| 170 cm | 66.929 in | Average height (~5'7") |
| 180 cm | 70.866 in | Tall adult (~5'11") |
| 200 cm | 78.740 in | Tall doorframe |