How to calculate running pace
This page answers one question: how much elapsed time did each kilometre or mile take on average? Enter the complete distance and total elapsed time, then choose min/km or min/mi for the result. It is useful for a measured run, walk, or ride, but it does not prescribe training, predict performance, collect a route, or calculate a missing distance or finish time.
Step by step
- Enter the running distance.
- Enter the total elapsed time in hours, minutes, and seconds.
- Choose the distance unit and the result unit.
- Select Calculate. The speed or pace result appears below the button.
- Use Clear beside distance or time to clear only that input; selected units stay in place.
- Changing an input clears the old result, so select Calculate again after editing.
Pace formula and unit conversion
Pace equals total elapsed time divided by distance: pace = elapsed time ÷ distance. Pace, distance, and time are mathematically related, but this page applies only the pace form. It does not accept a known pace as an input and does not solve for distance or elapsed time.
The calculator converts the selected distance to metres, converts elapsed time to seconds, and then expresses the quotient per kilometre or per mile. Pace is the inverse style of speed: a smaller minutes-per-distance result means less time was needed for each unit and therefore a faster average.
Example: calculate average pace
A 5-kilometre run completed in 25 minutes has an average pace of 5:00 min/km because 25 ÷ 5 = 5 minutes per kilometre. Enter 5 km and 25 minutes, choose min/km, then calculate.
A 3.1-mile run completed in 30 minutes has a pace of about 9:41 min/mi after rounding to the nearest second. Choose min/km instead and calculate again to display about 6:01 min/km.
Another pace example
A 10-kilometre run completed in 52 minutes has an average pace of 5:12 min/km. Enter 10 km and 52 minutes, choose min/km, and calculate.
Choose min/mi with the same distance and elapsed time and calculate again to display about 8:22 min/mi. The activity has not changed; only the distance unit used to express its average pace has changed.
Valid input, zero values, and supported range
- Distance accepts non-negative whole numbers or decimals without a unit symbol in the number box.
- Elapsed-time hours, minutes, and seconds use whole numbers. Minutes and seconds must each be from 0 to 59.
- Pace calculation requires positive distance and positive elapsed time because neither value can be the divisor or total of a meaningful pace when it is zero.
- Values that overflow the supported numeric range during unit conversion are rejected instead of being displayed as infinity or 0:00.
- Pace is rounded to the nearest whole second for display, so another source that rounds distance or time earlier may differ slightly.
What the result does and does not mean
Use min/km when the activity distance is thought of in kilometres and min/mi when it is thought of in miles. You may mix the distance and pace units; the calculator converts them before solving.
The highlighted result can be copied manually. The page does not create splits, route maps, target workouts, heart-rate zones, calorie estimates, or performance forecasts. Surface, elevation, pauses, and changing effort are outside this arithmetic calculation.
Frequently asked questions
Why does a lower pace number mean faster? It represents less time needed per kilometre or mile. Can seconds be 75? No; enter 1 additional minute and 15 seconds. Why did the result disappear? An edited input has not been recalculated yet. Is 5:00 min/km the same as 5:00 min/mi? No; the distance units differ. Why might a watch show another value? Devices can use moving time, pauses, GPS distance, and their own rounding, none of which this page measures.