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Randozi

Length Converter

Type a length, pick two units and read the answer instantly — with the same value in every other unit just below.

10 km =

6.21371 mi

1 km = 0.6213711922 mi

This value in every unit

Millimeters10,000,000 mm
Centimeters1,000,000 cm
Meters10,000 m
Kilometers10 km
Inches393,701 in
Feet32,808.4 ft
Yards10,936.1 yd
Miles6.21371 mi
Nautical miles5.39957 nmi

How it works

  1. Enter the length you want to convert. Decimals are fine, with a dot or a comma.
  2. Pick the unit you start from and the unit you want, for example kilometers to miles.
  3. Read the result as you type. Press Swap to convert the other way round.
  4. Scroll to the table to see the same length in every unit at once.

What people use it for

  • Running and travel

    Turn a 10 km race or a road distance into miles, or a trail sign in miles into kilometers.

  • DIY and furniture

    Check whether a shelf listed in inches fits a wall you measured in centimeters.

  • Homework and sailing

    Check metric–imperial exercises, or convert nautical miles from a chart into kilometers.

Questions

How many kilometers are in a mile?
Exactly 1.609344 km. The international mile is defined as 1,609.344 meters, so 1 km is about 0.621371 miles.
Are inches and feet converted exactly?
Yes. Since 1959 an inch is exactly 2.54 cm, a foot exactly 0.3048 m and a yard exactly 0.9144 m, and the converter uses those definitions.
What is a nautical mile?
A unit used at sea and in aviation, defined as exactly 1,852 meters — about 1.15078 ordinary miles.