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CM to Inches Converter

Convert centimeters to inches and inches to centimeters instantly with this simple two-way converter.

Convert CM / Inches

Centimeters

Inches

Result

Live

170 cm equals

0.00 in

0.00 in equals

170.00 cm

How to Calculate & Formula Details

Mathematical Model FormulaInches = Centimeters / 2.54. Centimeters = Inches * 2.54.

Converting between centimeters and inches is one of the most common unit conversions, useful for height, screen sizes, fabric measurements, and international shopping.

The Conversion Factor

One inch is defined as exactly 2.54 centimeters. To convert centimeters to inches, divide by 2.54. To go the other way, multiply inches by 2.54.

Quick Reference

1 cm ≈ 0.3937 in
1 in = 2.54 cm
30 cm ≈ 11.81 in

Frequently Asked Questions

How many inches is 1 cm?

1 centimeter is approximately 0.3937 inches.

How do I convert my height from cm to inches?

Divide your height in centimeters by 2.54. For example, 170 cm divided by 2.54 equals about 66.9 inches.

Is this conversion exact?

Yes, the inch-to-centimeter relationship (1 in = 2.54 cm) is an exact, internationally defined conversion, not an approximation.

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