Miles to Kilometers Converter (mi to km)

Try a practical example

Batch conversion

One value per line, up to 200. Uses the selected mi → km units. Invalid rows stay visible in the results and CSV.

Using this length converter

Check drawing dimensions, product sizes, travel distances or a measured length without changing the physical distance.

The foot and inch here are the international definitions. Convert the measured dimension first, then apply any tolerance or construction allowance separately.

Check before using the result

• A length factor cannot convert square feet or cubic feet. Select Area or Volume for those quantities.
• A value written as 5 ft 6 in must first be combined into one unit: 66 in or 5.5 ft. Do not enter 5.6 ft.

Definitions and method: NIST: unit conversion factors and rounding. Calculations use double-precision arithmetic; the display precision can be adjusted above.