Miles to Kilometers (miles to km)

How to convert miles to kilometers

Multiply the miles by 1.609344:

kilometers = miles × 1.609344

65 mi × 1.609344 = 104.60736 km, or 104.61 km. The factor is exact, so the only choice is how far to round. To go back, divide by 1.609344 — the kilometers to miles converter also has a chart of race distances in miles.

The result also gives the distance in meters and feet. A mile is 1,609.344 m and 5,280 ft.

Miles to kilometers chart

To convert a list — a training log, legs of a road trip, a delivery route — open Convert a list of values, paste the miles one per line and download the kilometers as CSV.

Running, driving and flying

Running. U.S. races are often named in miles, international ones in kilometers:

Driving. U.S. speed limits in kilometers per hour: 25 mph is 40.2 km/h, 55 mph is 88.5 km/h, 65 mph is 104.6 km/h and 70 mph is 112.7 km/h. For speeds in both directions, use km/h to mph.

Flying and boating. Pilots and sailors use the nautical mile of exactly 1.852 km. A flight of 500 nautical miles is 926 km, not 805 km — do not use this converter for nautical miles.

Statute, survey and nautical miles

The ordinary mile on road signs, maps and running watches is the statute or international mile: 5,280 feet, 1,760 yards, exactly 1.609344 km since 1959. Two other miles still turn up:

• The U.S. survey mile (about 1.609347 km) was based on the old survey foot used for land records. NIST retired the survey foot on January 1, 2023, so new work uses the international mile; the difference is about 2 mm per kilometer.
• The nautical mile (exactly 1.852 km) is based on one minute of latitude and is used for sea and air navigation, with speeds in knots.

Quick ways to estimate

For a road sign or a run, × 1.6 is plenty. For a distance on a form or a contract, use the exact factor; for meters, meters to miles works the other way.