EPOC After-Burn Calorie Calculator
Estimate calories burned after exercise through EPOC (Excess Post-Exercise Oxygen Consumption), the afterburn effect from high-intensity workouts.
What Is EPOC? EPOC stands for Excess Post-Exercise Oxygen Consumption — commonly called the “afterburn effect.” After intense exercise, your body continues burning extra calories to restore itself to its resting state. This includes replenishing ATP stores, clearing lactate, repairing muscle tissue, and lowering core temperature.
EPOC as a Percentage of Exercise Calories The magnitude of EPOC depends on exercise intensity:
| Intensity | Examples | EPOC Bonus |
|---|---|---|
| Moderate | Steady cardio, brisk walking | ~8% of exercise calories |
| High | HIIT, circuit training, cycling sprints | ~12% of exercise calories |
| Very High | All-out sprints, heavy strength circuits | ~17% of exercise calories |
EPOC Duration
- Moderate intensity: 30–60 minutes post-workout
- High intensity (HIIT): 2–3 hours post-workout
- Very high intensity: 6–24 hours post-workout
Example A 45-minute HIIT session burning 400 calories: EPOC bonus = 400 × 12% = 48 extra calories Total = 400 + 48 = 448 calories burned
Practical Insight EPOC adds a meaningful but modest boost — not the hours of “afterburn” sometimes claimed in marketing. The real benefit of HIIT is efficiency: more calories burned per minute of exercise compared to steady-state cardio.