CM to Inches: Quick Guide With Conversion Table
Centimeters and inches show up everywhere — clothing sizes, TV diagonals, phone dimensions, furniture. The conversion is easier than most people expect once you remember a single factor.
The Conversion
One inch is defined as exactly 2.54 centimeters. So: inches = centimeters ÷ 2.54, and centimeters = inches × 2.54.
Clothing and Body Measurements
If your waist measures 80 cm, that's 80 ÷ 2.54 = 31.5 inches. A 96 cm chest is about 37.8 inches. A height of 175 cm is 68.9 inches, or 5 ft 8.9 in.
Screens and Devices
TV and monitor sizes are typically quoted in inches diagonally. A 'small' 24-inch monitor is 60.96 cm diagonal. A 65-inch TV is 165.1 cm.
Mental Shortcut
To estimate inches from centimeters, divide by 2.5 (close enough for most purposes). 20 cm → 8 inches. 50 cm → 20 inches. The true values are 7.87 and 19.69 — within 2% either way.
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Frequently Asked Questions
Why is 1 inch exactly 2.54 cm?
The international yard and pound agreement of 1959 defined the inch as exactly 25.4 mm, so 2.54 cm by definition.
What about feet and meters?
1 foot = 30.48 cm = 0.3048 m exactly.