MPH to KM/H Converter
Convert miles per hour (mph) to kilometers per hour (km/h) instantly and accurately.
Convert miles per hour to kilometers per hour instantly with this free online tool. Type a speed in mph and see the equivalent in km/h right away, or type km/h to convert back. Everything runs in your browser — no sign-up and no waiting.
How to convert mph to km/h
To convert miles per hour to kilometers per hour, multiply the speed in mph by 1.609344, because one mile is defined as exactly 1.609344 kilometers. For example, 60 mph × 1.609344 = 96.56064 km/h. This converter does the math for you and updates as you type.
- Enter the speed in miles per hour in the first field.
- Read the result in kilometers per hour in the second field.
- Type into the km/h field to convert in the other direction.
Why use this mph to km/h converter?
- 100% free with no ads, sign-up, or limits.
- Instant, two-way conversion as you type.
- Accurate to the international mile (exactly 1.609344 km).
- Runs entirely in your browser.
Frequently asked questions
What is the formula to convert mph to km/h?
Kilometers per hour = miles per hour × 1.609344. For a quick estimate, multiply by about 1.61.
How fast is 60 mph in km/h?
60 mph is exactly 96.56064 km/h, usually rounded to about 96.6 km/h.
How many km/h is 1 mph?
1 mph equals exactly 1.609344 km/h.