Common race distances
Tap any benchmark to load it into the converter. Official marathon and half-marathon distances use their metric definitions.
OneFreePlace · Tool #110
Miles to kilometres, with the exact distance kept visible.
Convert miles and kilometres instantly, including fractions and pasted units. See meters, yards and feet, compare common running distances, batch-convert a trip list, and understand when the familiar “× 1.6” shortcut starts drifting.
✓ Exact 1 mi = 1.609344 km✓ Fractions & decimal commas✓ Race-distance translator✓ Batch conversion
Miles to Kilometers Converter
Exact · reversible · local
Distance converter
Enter any distance
Paste units directly too: 3.1 mi, 5 km, 1 1/2 miles or 7,5 km.
Display precisionMath stays exact internally
How good is the ×1.6 shortcut?
At 10 miles, ×1.6 gives 16 km; the exact result is 16.09344 km, a difference of 93.44 metres.
Kilometres
Exact factor16.0934
km
10 miles × 1.609344 = 16.09344 km
Nautical miles8.6898 nmifor reference only
Formula used
kilometres = miles × 1.609344
10 miles on a 0–100 mile scale10%
Batch trip converter
Paste multiple distances, one per line. A unit is optional; bare numbers use the unit currently selected above.
Reference distances
A quick exact-reference table for everyday road and travel distances.
| Miles | Kilometres | Metres | Yards | Feet |
|---|
i
Definition usedOneFreePlace uses the international mile: exactly 1 mile = 1,609.344 metres = 1.609344 kilometres. Display rounding never changes the underlying conversion.