Treadmill Pace Converter
Convert treadmill speed in kph or mph to running pace per km and per mile, and back again.
Incline note: most treadmills read flat-belt speed. Adding 1 to 2 percent incline roughly matches the effort of running the same pace outdoors, where wind resistance is a factor. For reference, 10 kph is 6:00 min/km.
Treadmills show speed, but training plans are written in pace, so the two rarely line up in your head mid-run. This converter closes that gap in both directions. Enter the belt speed in kph or mph and read your pace in min/km and min/mile, or type the pace your plan asks for and get the exact number to set on the console. No more guessing whether 11.5 kph is close enough to your tempo target.
How speed and pace relate
Speed and pace are reciprocals scaled to an hour. Pace per kilometre is 3600 divided by the speed in kph, and pace per mile is 3600 divided by the speed in mph. That is why 10 kph lands on a tidy 6:00 min/km and 12 kph on 5:00 min/km. The converter uses the exact factor of 1.609344 kilometres per mile when moving between metric and imperial, so a pace you set in min/mile round-trips back to the same kph without drift.
The incline question
Outdoors you push through air and cope with tiny changes in terrain, neither of which a flat belt reproduces. A widely used adjustment is to run at 1 to 2 percent incline to make treadmill effort feel closer to road effort at the same displayed speed. The effect is minor for easy jogging and more noticeable at faster paces, so if you are hitting hard intervals indoors, a touch of incline keeps the effort honest. Whatever incline you choose, the numbers this tool shows describe the flat-belt speed the console reports.
Fit it into your training
Once you know your treadmill pace, plan the session around it. Use the finish time calculator to see what a steady treadmill effort would produce over a race distance, or the main pace calculator to convert between every unit at once. Racing soon? The race time predictor helps set a realistic goal from a recent result.
Frequently asked questions
What pace is 10 kph on a treadmill?
10 kph is exactly 6:00 min/km, which is about 9:39 min/mile. Bump the belt to 12 kph and you are running 5:00 min/km.
How do I convert treadmill mph to pace?
Set the direction to speed to pace and choose mph. As a guide, 6.0 mph is about 10:00 min/mile and 7.5 mph is about 8:00 min/mile.
Should I set an incline to match outdoor running?
Many runners add 1 to 2 percent incline to approximate the air resistance you meet outdoors. At easy paces the difference is small, but it grows as you speed up.
Why does my treadmill feel easier than the road?
The belt moves under you and there is no wind or terrain change, so the same displayed speed can feel slightly easier. A small incline and honest effort help bridge the gap.