Weight + workload + time
Treadmill Calorie Calculator
Estimate energy use for one treadmill session. Adjust grade to compare like-for-like sessions instead of relying on a generic calories-per-hour table.
Calorie estimate
Calculate your treadmill session
Values stay in your browser and are never sent to us.
Enter your session and choose Calculate to see results.
How it works
Enter body weight, belt speed or pace, incline, and active minutes. The calculator estimates oxygen demand first, then converts that estimate into kilocalories.
Formula
Calories = VO₂ (ml/kg/min) × weight (kg) ÷ 1,000 × 5 × minutes. Select Walking or Running to control the equation. The walking equation is intended for speeds up to 6 km/h; the running equation is intended for speeds at or above 8 km/h. The selected equation stays in use, with a scope warning outside its intended range.
Example
A 70 kg person at 10 km/h for 30 minutes covers 5 km. Adding incline raises the equation's oxygen and calorie estimate while distance stays the same.
FAQ
Why is this different from the treadmill display?
Machines may use different assumptions or sensor inputs. Treat both as estimates, especially if the machine does not know your current weight.
A peer-reviewed comparison of walking equations documents prediction error and underestimation in generalized equations.