Centimeters to Inches Converter cm → in

1 centimeter (cm) = 0.3937007874 inches (in). Type a value below — the conversion happens instantly, entirely on your device.

From

1 cm = 0.3937007874 in

Precision

170 centimeters = 66.929134 inches

170 × 0.393701 = 66.929134

1 cm equals 0.393701 in, so multiplying by 0.393701 converts the value. The result describes the exact same quantity — only the measuring stick changes.

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How to convert centimeters to inches

inches = centimeters × 0.3937007874 — multiply the centimeter value by 0.393701.

Example: 170 cm = 66.9291 in.

To convert the other way: centimeters = inches ÷ 0.3937007874 — or use the dedicated in to cm converter .

Centimeters-to-inches is the most common length conversion for body height, clothing and screen sizes. Since 1 inch is defined as exactly 2.54 cm, dividing centimeters by 2.54 always gives an exact result — for example, an average adult height of 170 cm is 66.93 inches (about 5 feet 7 inches).

Centimeters to Inches conversion table

Centimeters (cm)	Inches (in)
0.1	0.039370079
0.25	0.098425197
0.5	0.19685039
1	0.39370079
2	0.78740157
3	1.1811024
4	1.5748031
5	1.9685039
6	2.3622047
7	2.7559055
8	3.1496063
9	3.5433071
10	3.9370079
15	5.9055118
20	7.8740157
25	9.8425197
30	11.811024
40	15.748031
50	19.685039
75	29.527559
100	39.370079
250	98.425197
500	196.85039
1000	393.70079

About the units

What is a centimeter?

A centimeter (cm) is one hundredth of a meter. It is the everyday metric unit for body measurements, clothing sizes and small objects; 2.54 cm equal exactly 1 inch.

What is a inch?

An inch (in) is an imperial and US customary unit defined as exactly 25.4 millimeters since 1959. Twelve inches make one foot; screens, wheels and paper sizes are commonly measured in inches.

Frequently asked questions

How many inches are in 1 centimeter?

1 centimeter (cm) = 0.3937007874 inches (in).

What is the formula to convert centimeters to inches?

inches = centimeters × 0.3937007874 — multiply the centimeter value by 0.393701.

How do I convert cm to in without a calculator?

Multiply by 0.394 for a close estimate. Exact factor: 1 cm = 0.3937007874 in.

Is this cm-to-in converter accurate and private?

Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.

How tall is 170 cm in inches and feet?

170 cm equals 66.93 inches, which is 5 feet 6.9 inches — commonly rounded to 5′ 7″.