Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Fitness
VO2 Max Estimator
Estimate VO2 max (maximum oxygen uptake) in ml/kg/min from a recent running performance β distance, time, and body weight. A field-test approximation of one of the most important cardiorespiratory fitness markers.
Fill in the required fields to see your result.
Fitness
Calories Burned Running Calculator
Estimate calories burned during a run from body weight, duration, and average speed. A quick first-pass for runners tracking energy expenditure; uses a simplified linear formula rather than full MET-based equations.
Fill in the required fields to see your result.
Key differences
| VO2 Max Estimator | Calories Burned Running Calculator | |
|---|---|---|
| Category | Fitness | Fitness |
| Inputs required | 3 | 3 |
| Result | Estimated VO2 Max (ml/kg/min) | Calories Burned (kcal) |
| What it does | Estimate VO2 max (maximum oxygen uptake) in ml/kg/min from a recent running performance β distance, time, and body weight. A field-test approximation of one of the most important cardiorespiratory fitness markers. | Estimate calories burned during a run from body weight, duration, and average speed. A quick first-pass for runners tracking energy expenditure; uses a simplified linear formula rather than full MET-based equations. |