1–25 mph · 0.1 mph steps. Use the arrow keys on the slider or type a speed above.
Your treadmill pace
Illustrative 7.5 mph belt speed.
- Pace per mile
- 8:00 min:sec / mile
Metric and track clocks
- Pace per kilometer
- 4:58 min:sec / km
- 400m equivalent
- 1:59 min:sec / 400m
- Belt speed in km/h
- 12.1 km/h
Clocks round to the nearest second and km/h to one decimal. Calculations use unrounded values.
Conversion assumptions
Seconds per mile = 3600 ÷ mph. Per-kilometer pace divides by 1.60934; the 400m clock divides by 4.02336. km/h = mph × 1.60934. These existing factors use slightly different mile precision, so the displayed clocks are approximate.
This is distance-and-speed arithmetic. It does not adjust for incline, belt calibration, air resistance or outdoor effort. The 400m result is a distance equivalent, not a measured track lap.
The speed control retains the existing 1–25 mph range. It is an input range, not a recommendation to run at any particular speed.