Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Fitness
VO2 Max Calculator
Estimate your VO2 max — the maximum rate at which your body can take up and use oxygen during exhaustive exercise — from a recent race time without needing a lab treadmill or metabolic cart. VO2 max is the single best whole-system measure of aerobic fitness and is strongly predictive of all-cause mortality.
Fill in the required fields to see your result.
Fitness
Running Pace Calculator
Convert any running time and distance into a per-kilometre or per-mile pace, and project your finish time at that pace over standard race distances. The operational tool runners use to set treadmill speeds, design interval workouts, and avoid blowing up by going out too fast on race day.
Fill in the required fields to see your result.
Key differences
| VO2 Max Calculator | Running Pace Calculator | |
|---|---|---|
| Category | Fitness | Fitness |
| Inputs required | 4 | 5 |
| Result | Estimated VO2 Max (ml/kg/min) | Pace per Kilometer (min/km) |
| What it does | Estimate your VO2 max — the maximum rate at which your body can take up and use oxygen during exhaustive exercise — from a recent race time without needing a lab treadmill or metabolic cart. VO2 max is the single best whole-system measure of aerobic fitness and is strongly predictive of all-cause mortality. | Convert any running time and distance into a per-kilometre or per-mile pace, and project your finish time at that pace over standard race distances. The operational tool runners use to set treadmill speeds, design interval workouts, and avoid blowing up by going out too fast on race day. |