Kilometre To Mile Calculator

Work out kilometre to mile instantly with clear inputs, formula shown and shareable results.

About Kilometre To Mile Calculator

Converting Kilometres to Miles is a single multiplication: one km equals 0.62137119 mi, so the amount is multiplied by that factor. Switching the direction divides by the same factor instead. This factor is an exact definition, not a rounded approximation, so the conversion is precise at any scale.

Formulas

Kilometres → Miles

mi = km × 0.62137119

Miles → Kilometres

km = mi ÷ 0.62137119

Worked example

With the default values below, Kilometre To Mile Calculator returns Converted Value of 0.621371. Change any input above and every figure here is recalculated in your browser.

Inputs used

Amount to convert: 1
Directionone of Kilometres → Miles, Miles → Kilometres: Kilometres → Miles

Results

Converted Value: 0.621371
Result Unit: mi
Multiplier Applied: 0.62137119
Conversion Used: 1 km = 0.62137119 mi

Step by step

1Values used
2Kilometres → Miles
3Miles → Kilometres
4Converted Value= 0.621371
5Result Unit= mi
6Multiplier Applied= 0.62137119
7Conversion Used= 1 km = 0.62137119 mi

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 8 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How many mi are in one km?

One km is 0.62137119 mi. That figure is exact by definition.

How do I convert Miles back to Kilometres?

Divide by 0.62137119 instead of multiplying — or just switch the direction selector, which does it for you.