Lunia · Free tools
Treadmill Calorie Calculator
Estimate treadmill energy from speed, incline, duration and body weight.
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How this calculator works
The ACSM walking equation is VO₂ = 0.1s + 1.8sg + 3.5; running uses 0.2s + 0.9sg + 3.5. Speed s is metres per minute and grade g is a decimal. Oxygen cost is converted at approximately 5 kcal per litre.
A worked example
Body weight: 70 · Weight unit: Kilograms · Walking speed: 5 · Speed unit: km/h · Duration in minutes: 30 · Incline (%): 3 · Gait: Walking
- Gross energy
- 172 kcal
- Active energy above rest
- 135 kcal
- Elevation gain
- 75 m
- Estimated intensity
- 4.7 MET
These are illustrative inputs, not personal recommendations.
Common questions
Does holding the rails change the estimate?
Yes. Supporting body weight on the rails changes the work performed. The standard equation cannot measure that reduction.
How should I use the result?
Use walking at approximately 3 to 6 km/h and running above approximately 8 km/h. Steady-state uphill exercise without holding handrails is assumed; slower running, faster walking and intervals reduce accuracy.
Sources & method references
Formula-based results are estimates, not individual medical advice.