How do I convert kilometers back to miles?

Use the reverse converter: 1 kilometer equals 0.621371 mi.

Is this converter accurate?

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert miles to kilometers, multiply the value by 1.609344.

km = mi × 1.609344

90 mi × 1.609344 = 144.84 km

Mile (mi): Used for road distances in the US and UK. The statute mile is exactly 1,609.344 metres, derived from the Roman mille passus.
Kilometer (km): Used for road distances in almost every country except the US and UK. Equal to 1,000 metres.

How do I convert miles to kilometers?: To convert miles to kilometers, multiply the value by 1.609344.
How many kilometers are in 1 mile?: 1 mile equals 1.60934 km.
How many kilometers are in 10 miles?: 10 mi equals 16.0934 km.
How do I convert kilometers back to miles?: Use the reverse converter: 1 kilometer equals 0.621371 mi.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.