Skip to main content
Kalcufy

CM to Inches Converter

How to Convert CM to Inches

To convert centimeters to inches, divide the centimeter value by 2.54. The inch is defined as exactly 25.4 millimeters (2.54 centimeters) by international agreement since 1959. This means 1 cm = 0.393701 inches. For example, 170 cm ÷ 2.54 = 66.93 inches, which equals 5 feet 6.93 inches. This conversion is commonly needed for height measurements, screen sizes, paper dimensions, and any time you need to translate between metric and imperial systems.

The CM to Inches Formula

The formula is simple: inches = centimeters ÷ 2.54. Since 1 inch = 2.54 cm exactly, dividing by 2.54 converts any centimeter measurement to inches. To also express the result in feet and inches: divide total inches by 12 to get feet, and the remainder is the inches portion. For example: 180 cm ÷ 2.54 = 70.87 inches. Then 70.87 ÷ 12 = 5 feet with 10.87 inches remaining, so 180 cm = 5'10.9".

Frequently Asked Questions

How many inches is 1 cm?

1 centimeter equals 0.393701 inches. To convert cm to inches, divide the cm value by 2.54. For example, 10 cm = 10 ÷ 2.54 = 3.937 inches.

How do I convert cm to feet and inches?

First divide cm by 2.54 to get total inches. Then divide total inches by 12 — the whole number is feet, the remainder is inches. Example: 170 cm ÷ 2.54 = 66.93 in; 66.93 ÷ 12 = 5 ft 6.93 in ≈ 5'7".

What is 170 cm in feet and inches?

170 cm = 66.93 inches = 5 feet 6.93 inches, which is approximately 5'7". This is close to the average adult height in many countries.

What is 180 cm in feet?

180 cm = 70.87 inches = 5 feet 10.87 inches, approximately 5'11". This is considered above-average height for males in most countries.

How many cm in a foot?

There are exactly 30.48 centimeters in one foot. This is because 1 foot = 12 inches, and 1 inch = 2.54 cm, so 12 × 2.54 = 30.48 cm.

Is cm to inches exact or approximate?

The conversion is exact: 1 inch = exactly 2.54 cm by international definition (since 1959). So 1 cm = exactly 10/25.4 inches = 0.393700787... inches. Any rounding in results is due to decimal display, not imprecision in the conversion factor.