Length Converter: cm to Inches, Feet, Metres and Miles
Convert cm to inches, inches to cm, feet to metres, kilometres to miles and more with this length converter. Type a number, choose its unit, and every other unit appears at once, including height in feet and inches.
| Unit | Value (click to copy) |
|---|
Everything runs in your browser. Nothing you enter is sent to or stored on our server.
Quick answer: 1 inch is exactly 2.54 cm. To convert cm to inches, divide by 2.54: 170 cm ÷ 2.54 = 66.93 in, or 5 ft 6.9 in. To convert inches to cm, multiply by 2.54.
How to use the length converter
Type a number in Value and pick its unit in From. The table shows the same length in every unit, and the box above it shows feet and inches, which is handy for heights. Click any value to copy it.
cm to inches and other length formulas
| Convert | Multiply by |
|---|---|
| Inches to centimetres | 2.54 (exact) |
| Centimetres to inches | 0.3937 |
| Feet to metres | 0.3048 (exact) |
| Metres to feet | 3.2808 |
| Miles to kilometres | 1.609344 (exact) |
| Kilometres to miles | 0.6214 |
| Yards to metres | 0.9144 (exact) |
The inch has been defined as exactly 25.4 mm since 1959, so these conversions are exact, not approximate.
Height in cm and feet
| cm | Feet and inches | cm | Feet and inches |
|---|---|---|---|
| 150 | 4 ft 11.1 in | 170 | 5 ft 6.9 in |
| 155 | 5 ft 1.0 in | 175 | 5 ft 8.9 in |
| 160 | 5 ft 3.0 in | 180 | 5 ft 10.9 in |
| 165 | 5 ft 5.0 in | 185 | 6 ft 0.8 in |
Everyday examples
- Screen sizes: a 15.6-inch laptop screen is 39.6 cm across the diagonal.
- Running: a 5K race is 3.11 miles; a marathon is 42.195 km or 26.2 miles.
- Paper: A4 is 21 × 29.7 cm (8.27 × 11.69 in); US Letter is 8.5 × 11 in (21.6 × 27.9 cm).
Also see the weight converter and the temperature converter.
FAQ
How many cm are in a foot?
30.48 cm.
Is a nautical mile the same as a mile?
No. A nautical mile is 1,852 m, about 1.15 ordinary miles, and is used at sea and in aviation.
More free tools
See all of them on the QuickOnlineTips free online tools page and play our free online games.