Cm to Inches Converter
Convert centimeters to inches — or the reverse — with heights also displayed as feet and inches, the format used for people, screens and furniture in the US.
How to use this calculator
- Enter the value in cm or inches.
- Pick the direction of conversion.
- Press Convert — the feet + inches row is what you need for heights.
Formula used
One inch is defined as exactly 2.54 cm. For heights, divide total inches by 12 for feet and keep the remainder as inches.
Example calculation
Convert 170 cm: 170 ÷ 2.54 = 66.93 inches = 5 ft 6.9 in. In reverse, 6 feet (72 in) = 72 × 2.54 = 182.9 cm.
The cm–inch conversion
This is the world's most-searched unit conversion because heights, screens, clothing and furniture cross the metric–imperial border constantly. Since 1959, the inch is defined as exactly 2.54 cm, making conversions exact rather than approximate.
Common heights: 160 cm = 5'3", 170 cm = 5'7", 175 cm = 5'9", 180 cm = 5'11", 183 cm = 6'0". Screen sizes are measured diagonally in inches: a 15.6" laptop screen is 39.6 cm across the diagonal.
Why use this calculator?
- Convert heights for forms, dating profiles, sports stats and medical records.
- Check screen, wheel and furniture dimensions sold in inches.
- Feet + inches output included — the step other converters skip.
Frequently asked questions
What is 170 cm in feet and inches?
5 feet 6.9 inches — commonly stated as 5'7". Divide 170 by 2.54 to get 66.93 inches, then split: 66.93 ÷ 12 = 5 ft remainder 6.9 in.
How many cm is 5 feet 7 inches?
5'7" = 67 inches × 2.54 = 170.18 cm. Each foot adds 30.48 cm.
Is an inch exactly 2.54 cm?
Yes — by international agreement since 1959. That makes cm↔inch conversions exact, unlike many unit pairs that involve rounding.