Centimeter to Inch Converter (cm to in)
1 centimeter = 0.393701 inch. The inch is the everyday length unit in the US and, for screens and tools, in many other countries, while the centimeter is the metric unit used almost everywhere else.
Result
170 cm = 66.929134 in
How to convert centimeter to inch
The inch is the everyday length unit in the US and, for screens and tools, in many other countries, while the centimeter is the metric unit used almost everywhere else. By international agreement since 1959, one inch is defined as exactly 2.54 centimeters, so this conversion is exact rather than approximate.
Formula
in = cm × 0.393701
Worked example
170 cm × 0.393701 = 66.9291 in
Centimeter to Inch quick-reference table
| Centimeter (cm) | Inch (in) |
|---|---|
| 1 cm | 0.393701 in |
| 5 cm | 1.9685 in |
| 10 cm | 3.93701 in |
| 25 cm | 9.84252 in |
| 50 cm | 19.685 in |
| 100 cm | 39.3701 in |
Real-life examples
Height is the classic case: a person who is 170 cm tall is about 66.9 in, or 5 ft 6.9 in. The same conversion helps when a European clothing size, curtain width or phone screen is listed in centimeters and you need inches.
Frequently asked questions
How tall is 170 cm in feet and inches?
170 cm is 66.93 inches, which is 5 feet 6.93 inches (about 5 ft 7 in).
Is 2.54 an exact number?
Yes. Since the 1959 international yard and pound agreement, 1 inch is exactly 2.54 cm, so there is no rounding in the factor itself.
Is cm to inch the same as cm to inches?
Yes. "Inch" is the unit name and "inches" is its plural, so both searches use the same conversion.
What is 1 centimeter in inch?
1 centimeter = 0.393701 inch (cm to in).
What is the formula to convert cm to in?
in = cm × 0.393701. For example, 170 cm × 0.393701 = 66.9291 in.
How do I convert in back to cm?
Use the reverse converter: 1 inch = 2.54 centimeter. Check: 66.9291 in converts back to 170 cm.
Reverse conversion
Need the other direction? Inch to Centimeter converter (in to cm): 1 inch = 2.54 centimeter.
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