Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Fitness
Heart Rate Training Zones Calculator
Calculate your personalised heart rate training zones using the Karvonen heart rate reserve method, which factors in resting heart rate to give zones that actually reflect your cardiovascular fitness. Used by coaches and endurance athletes to keep aerobic, threshold, and VO2-max sessions in the right intensity bands.
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
| Heart Rate Training Zones Calculator | Running Pace Calculator | |
|---|---|---|
| Category | Fitness | Fitness |
| Inputs required | 4 | 5 |
| Result | Zone 3 Target HR (bpm) | Pace per Kilometer (min/km) |
| What it does | Calculate your personalised heart rate training zones using the Karvonen heart rate reserve method, which factors in resting heart rate to give zones that actually reflect your cardiovascular fitness. Used by coaches and endurance athletes to keep aerobic, threshold, and VO2-max sessions in the right intensity bands. | 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. |