Centimeters to Inches
One centimeter equals 0.393701 inches.
Inches = centimeters ÷ 2.54
Length Conversion Calculator
Common Length Conversions
Length Units Reference
Metric System
- 1 km = 1,000 m
- 1 m = 100 cm
- 1 cm = 10 mm
Imperial System
- 1 mi = 5,280 ft
- 1 yd = 3 ft
- 1 ft = 12 in
Conversions
- 1 in = 2.54 cm
- 1 ft = 0.3048 m
- 1 mi = 1.609 km
Centimeters to Inches Conversion Table
| cm | in |
|---|---|
| 1 | 0.3937 |
| 2 | 0.7874 |
| 3 | 1.1811 |
| 4 | 1.5748 |
| 5 | 1.9685 |
| 10 | 3.937 |
| 15 | 5.9055 |
| 20 | 7.874 |
| 25 | 9.8425 |
| 50 | 19.685 |
| 75 | 29.5276 |
| 100 | 39.3701 |
| 250 | 98.4252 |
| 500 | 196.8504 |
| 1000 | 393.7008 |
About This Conversion
Centimeters to inches shows up in clothing sizes, screen dimensions, luggage limits and furniture specifications. The relationship is exact by international agreement: one inch is 2.54 cm, so the conversion is a division by 2.54 with no approximation involved.
The trap is the output format. Inches are conventionally written in binary fractions, not decimals, so 15 cm is 5.906 in, which a tape measure would show as just under 5 15/16 in. If your result feeds into anything measured with an imperial tape, round to the nearest sixteenth rather than the nearest hundredth.
Frequently Asked Questions
How many inches is 1 cm?
One centimeter is 0.3937 inches. Dividing by 2.54 is the exact conversion.
How many inches is 30 cm?
30 cm is 11.811 inches, just under a foot.
What is 15 cm in inches on a tape measure?
15 cm is 5.906 in, which reads as roughly 5 and 15/16 inches on an imperial tape.
Is 2.54 an approximation?
No. Since 1959 the inch has been defined as exactly 2.54 centimeters, so the factor is exact.
Worth Knowing
Nautical Mile vs Mile
A nautical mile is 1,852 metres, about 15 percent longer than the statute mile of 1,609.344 metres, and equals one minute of latitude.
Height Conversion Chart
170 cm is 5 ft 6.9 in, 175 cm is 5 ft 8.9 in, and 180 cm is 5 ft 10.9 in.