Average Speed Calculator
Enter distance traveled and time taken to find average speed in miles per hour.
For educational use.
Examples
- 60 miles in 1.5 h ⇒ 40 mph
- 90 miles in 2 h ⇒ 45 mph
FAQ
Can I use kilometers?
Yes, but the result will be in kilometers per hour.
What if time is zero?
Time must be greater than zero.
Additional Information
- Ensure distance and time units match, such as miles with hours.
- Average speed ignores acceleration, stops, and other real-world variations.
Need a refresher on how SI definitions keep distance and time coherent? Read our guide to the seven SI base units for constant-based context before converting between miles, kilometres, and hours.