Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Fitness
Daily Calorie Needs Calculator
Estimate total daily calorie needs (TDEE) by combining the revised Harris-Benedict BMR formula with an activity multiplier. The number to eat at for maintenance, subtract from for fat loss, or add to for muscle gain.
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.
Key differences
| Daily Calorie Needs Calculator | VO2 Max Estimator | |
|---|---|---|
| Category | Fitness | Fitness |
| Inputs required | 4 | 3 |
| Result | Daily Calories Needed (kcal) | Estimated VO2 Max (ml/kg/min) |
| What it does | Estimate total daily calorie needs (TDEE) by combining the revised Harris-Benedict BMR formula with an activity multiplier. The number to eat at for maintenance, subtract from for fat loss, or add to for muscle gain. | 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. |