Length Converter
Convert any length in one step. Type a number in any unit, such as feet or centimeters, and every other unit updates instantly, so you can see all the conversions at once.
How to convert length
- 1Type the length in the box for the unit you have.
- 2Read the value in every other unit.
- 3Copy the one you need.
Exact definitions
Since 1959, the inch has been exactly 2.54 cm, the foot exactly 0.3048 m and the mile exactly 1,609.344 m, so conversions between metric and imperial units are exact, not approximations.
Height in feet and inches
To convert a height such as 5 feet 8 inches, convert 5 feet (152.4 cm) and 8 inches (20.32 cm) and add them: 172.72 cm. Or type 68 in the inches box, since 5 feet is 60 inches.
Clean numbers
Results are rounded to 12 significant digits, so 0.1 + 0.2 shows as 0.3, without the long tails of digits some converters show.
Frequently asked questions
- How many centimeters are in an inch?
- Exactly 2.54 centimeters.
- How many feet are in a meter?
- About 3.28084 feet.
- What's a nautical mile?
- Exactly 1,852 meters, used at sea and in aviation.