For the interactive calculator, open the full CalcHealth page.
Open Full CalculatorFrequently Asked Questions
What is the fat-burning heart rate zone?
50–60% of your max heart rate. This zone burns the highest proportion of fat as fuel.
Calculate your target heart rate zones for fat burn, cardio, and peak performance. Based on the Karvonen formula.
For the interactive calculator, open the full CalcHealth page.
Open Full Calculator50–60% of your max heart rate. This zone burns the highest proportion of fat as fuel.