Utilities
KM ↔ Miles Converter
Convert kilometers to miles and miles to kilometers with instant, accurate results. Everything runs locally — your data never leaves your device.
1 km = 0.6214 mi
0.6214 mi = 1 km
Client-side, private
How to use
Enter a value in Kilometers or Miles. The other field updates instantly. Use Swap values or copy as needed.
Formula
Kilometers → Miles
mi = km × 0.6213711922
Multiply kilometers by 0.6213711922.
Formula
Miles → Kilometers
km = mi × 1.609344
Multiply miles by 1.609344.
Exact constants
1 mile
= 1,609.344 m (exact)
1 kilometer
= 1,000 m (exact)
1 km
= 0.6213711922 mi