Running Pace Calculator
Find your average minutes per kilometer and kilometers per hour.
Running Pace Calculator
Table of Contents
Pace formula
Enter distance D in kilometers and elapsed time as whole hours H, minutes M, and seconds S. Time in seconds is T = 3,600H + 60M + S. Average pace is T ÷ D seconds per kilometer; average speed is 3,600D ÷ T kilometers per hour. Distance and time must both be greater than zero.
The pace display rounds T ÷ D to the nearest whole second, then formats it as minutes:seconds per kilometer. Speed is shown to two decimal places.
Worked example
For 10 km in 0 hours, 50 minutes, and 0 seconds, T = 3,000 seconds. Pace = 3,000 ÷ 10 = 300 seconds per kilometer, or 5:00 /km. Speed = 3,600 × 10 ÷ 3,000 = 12.00 km/h. These match the calculator output.
Pace and speed
Pace answers how much time one kilometer takes. Speed answers how many kilometers one hour would cover at the same average rate. At 5:00 /km, each kilometer takes five minutes; the equivalent speed is 12 km/h. Both use the same distance and elapsed time.
Limits and related tools
This is an average over the entered interval, not an instantaneous speed, split analysis, calorie estimate, or exercise recommendation. The input accepts kilometers only. A manually timed run may include pauses; choose elapsed time consistently when comparing results.
To compare a change between two pace values, use the percentage change calculator. To express a segment time as part of the whole, use the time percentage calculator.
Frequently Asked Questions
Can I enter miles?
The distance field is in kilometers only. Convert miles to kilometers before entering the distance; the displayed pace is always minutes per kilometer.
How is a pace such as 4:59.5 shown?
The calculator rounds the pace to the nearest whole second before formatting it as minutes:seconds. A rounded 60 seconds carries into the next minute.
Does the result describe every kilometer of a run?
No. It is the overall average from total distance and elapsed time. Stops, hills, and faster or slower segments are not shown separately.
Does this tool estimate calories or suggest a training target?
No. It reports only average pace and speed from the measurements you enter.
Sources
NIST Guide to the SI, Appendix B.9 supplies the minute-to-second and hour-to-second conversions. OpenStax Physics, section 2.2 defines average speed as total distance divided by elapsed time. The pace here is the reciprocal rate, elapsed time divided by distance.
Last reviewed: 2026-09-28.