Anaerobic Threshold Calculator
Result
Anaerobic Threshold Calculator The Anaerobic Threshold Calculator estimates the heart rate and running pace at which your body shifts from mainly aerobic to anaerobic energy production. It applies the Karvonen heart-rate reserve method at 85% intensity an — free online calculator.
Formula
- Anaerobic Threshold Calculator calculates its result from Maximum Heart Rate, Resting Heart Rate, Current 10K Pace. It uses the formula AT HR = Resting HR + HRR × 0.85; AT Pace ≈ 10K Pace × 1.05. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are Maximum Heart Rate, Resting Heart Rate, Current 10K Pace. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Anaerobic Threshold
- Maximum Heart Rate: 185
- Resting Heart Rate: 60
- Current 10K Pace: 5.5
Threshold HR estimate = resting HR + (max HR − resting HR) × 0.85; approximate training pace = 10K pace × 1.05. Training estimates, not laboratory thresholds.
Sample result: Calculating…
Frequently asked questions
What does the Anaerobic Threshold calculate?
Anaerobic Threshold Calculator The Anaerobic Threshold Calculator estimates the heart rate and running pace at which your body shifts from mainly aerobic to anaerobic energy production. It applies the Karvonen heart-rate reserve method at 85% intensity an — free online calculator.
Which values should I enter?
Enter Maximum Heart Rate, Resting Heart Rate, Current 10K Pace using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: AT HR = Resting HR + HRR × 0.85; AT Pace ≈ 10K Pace × 1.05.
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.