How many centimeters in one inch?

Exactly 2.54 centimeters = 1 inch. To convert cm to inches, divide by 2.54.

How do I convert height from cm to feet and inches?

Divide cm by 2.54 to get total inches, then divide by 12 for feet and use the remainder as inches.

Why does the US use inches?

The 1975 Metric Conversion Act was voluntary and never fully adopted. Most daily life and infrastructure stayed in Imperial/US customary units.

CM to Inches Converter

Q: What is 5 feet 10 inches in centimeters?

5 feet 10 inches = 70 total inches x 2.54 = 177.8 cm.

Convert centimeters to inches, feet, and meters instantly. Also converts inches to centimeters. Perfect for clothing sizes, heights, and measurements.

Updated May 2026 · CalcFlow Editorial

Conversion Direction

Value to Convert

For CM to Inches: enter centimeters. For Inches to CM: enter inches. For Feet to CM: enter feet here.

Additional Inches (only for Feet + Inches mode)

Only used when converting Feet + Inches to CM. Enter the inches part of a measurement like 5 feet 10 inches.

Enter values above and click Calculate to see your results.

Results shown are estimates for informational purposes only. Nothing on CalcFlow is financial, tax, legal, or medical advice. Always consult a qualified professional before making important decisions.

What is a CM to Inches Converter? A centimeter to inches converter applies the exact ratio of 1 inch = 2.54 centimeters to convert measurements between the metric (SI) and US/Imperial unit systems.

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Rule of Thumb

1 inch = 2.54 cm | 1 foot = 30.48 cm | 1 meter = 39.37 inches = 3.28 feet | 5 feet 10 inches = 177.8 cm.

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Example Calculation

A person 180 cm tall is 180 / 2.54 = 70.87 inches = 5 feet 10.87 inches. A 12-inch ruler is exactly 30.48 cm long.

Key Facts

•The inch was standardized internationally in 1959 as exactly 25.4 mm (2.54 cm), eliminating previous variations between countries.
•The US, Myanmar, and Liberia are the only countries that have not officially adopted the metric system for everyday use.
•Clothing sizes often mix both systems: US pants use inches (32x32) while European sizes use centimeters (size 82).

How to Use

Select the conversion direction: CM to Inches, Inches to CM, or Feet+Inches to CM.
Enter the value to convert.
For Feet + Inches mode, enter feet in the first field and additional inches in the second field.
Click Calculate to see the converted value in all formats.

Formula

1 inch = 2.54 cm exactly | cm to inches: cm / 2.54 | feet to cm: (feet x 12 + inches) x 2.54

Centimeters	Inches	Feet + Inches
150 cm	59.06 in	4 ft 11.06 in
155 cm	61.02 in	5 ft 1.02 in
160 cm	62.99 in	5 ft 2.99 in
165 cm	64.96 in	5 ft 4.96 in
170 cm	66.93 in	5 ft 6.93 in
175 cm	68.90 in	5 ft 8.90 in
180 cm	70.87 in	5 ft 10.87 in
185 cm	72.83 in	6 ft 0.83 in
190 cm	74.80 in	6 ft 2.80 in
30 cm	11.81 in	0 ft 11.81 in
100 cm (1 m)	39.37 in	3 ft 3.37 in

Frequently Asked Questions

How many centimeters are in one inch?

Exactly 2.54 centimeters = 1 inch. This has been the international standard since 1959. To convert inches to centimeters, multiply by 2.54. To convert centimeters to inches, divide by 2.54.

How do I convert my height from cm to feet and inches?

First divide your height in cm by 2.54 to get total inches. Then divide by 12 to get the feet component, and the remainder is the inches. Example: 175 cm / 2.54 = 68.90 inches. 68.90 / 12 = 5 feet with 8.90 inches remaining = 5 ft 8.9 in.

What is 5 feet 10 inches in centimeters?

5 feet 10 inches = (5 x 12) + 10 = 70 inches total. Multiply by 2.54: 70 x 2.54 = 177.8 cm.

Why does the US still use inches instead of centimeters?

The US adopted the metric system in the Metric Conversion Act of 1975, but the transition was voluntary and never widely completed. Infrastructure, road signs, consumer product labeling, and cultural habits remained in Imperial/US customary units. Most US scientific and medical fields use metric.

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