How to convert treadmill speed to pace
Treadmills show speed (mph or kph); runners think in pace (minutes per mile or kilometre). The two are inverses: pace = 60 ÷ speed. At 6 mph that is 60 ÷ 6 = a 10:00 mile; at 12 kph it is 60 ÷ 12 = a 5:00 kilometre.
Enter your treadmill speed above and this converter shows the pace in both units instantly — or switch to "I know my pace" to find the exact speed to set on the belt.
Why the 1% incline rule exists
Running on a flat treadmill is slightly easier than running outside. There is no air resistance to push through, and the moving belt helps pull your legs backwards. Research by Jones and Doust found that setting the treadmill to a 1% gradient makes the energy cost match outdoor running at the same speed — most noticeably at faster paces (roughly 8 mph and above).
That is why serious treadmill sessions usually start at 1%, not 0%. This converter defaults the incline to 1% for exactly that reason.
How incline changes the effort
The steeper the belt, the harder a given speed becomes. Using the energy cost of grade running, this converter estimates the equivalent flat-ground pace — the pace you could hold on level ground for the same effort. Because uphill running costs more energy, that equivalent flat pace is always faster than the belt speed alone suggests.
- A 2% incline is roughly 11% harder than flat.
- A 5% incline is roughly 28% harder.
- A 10% incline is well over 60% harder — hill-repeat territory.
Treat these as good estimates. Individual economy, treadmill calibration, and how you run hills all shift the real number.
Treadmill speed to pace chart
Common treadmill speeds with their pace in min/mile and min/km, plus the equivalent in the other speed unit. These are the values this converter produces at 0% incline.
| Speed (mph) | Speed (kph) | Pace / mile | Pace / km |
|---|---|---|---|
| 5.0 | 8.0 | 12:00 | 7:27 |
| 6.0 | 9.7 | 10:00 | 6:13 |
| 7.0 | 11.3 | 8:34 | 5:20 |
| 8.0 | 12.9 | 7:30 | 4:40 |
| 9.0 | 14.5 | 6:40 | 4:09 |
| 10.0 | 16.1 | 6:00 | 3:44 |
Take your treadmill runs into a real plan
The Running Genie logs your treadmill and outdoor runs together and builds a training plan around your pace — so indoor sessions actually count towards your goal.
Frequently asked questions
How do I convert treadmill speed to running pace?
Pace is the inverse of speed. Divide 60 by your speed to get minutes per unit: at 6 mph, 60 ÷ 6 = 10 minutes per mile; at 10 kph, 60 ÷ 10 = 6 minutes per km. This converter does it both ways and shows min/km and min/mile side by side.
Why set the treadmill to 1% incline?
Running on a flat belt is slightly easier than running outdoors because there is no air resistance and the belt assists leg turnover. A 1% incline is the widely used correction that makes treadmill effort roughly match outdoor running at the same speed, especially at faster paces.
How much harder is running on an incline?
Using the energy cost of grade running, a 2% incline is about 11% harder than flat at the same speed, and a 5% incline is roughly 28% harder. This converter applies that model to estimate the equivalent flat-ground pace for a given treadmill speed and incline.
Is treadmill running the same as outdoor running?
Close, but not identical. Treadmills remove air resistance and wind, provide a consistent surface, and the belt helps pull your legs through. Setting a 1% incline offsets most of the difference. Outdoor running adds terrain, wind, and pacing skill the treadmill cannot fully replicate.
What pace is 8 mph on a treadmill?
8 mph on a treadmill is a 7:30 per mile pace, which is about 4:40 per kilometre, or roughly 12.9 kph. Adding a 1–2% incline makes the equivalent outdoor effort a little faster than the belt speed suggests.
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