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HIIT Heart Rate Calculator

Calculate your target heart rate for HIIT workouts. See work and recovery zones for maximum calorie burn and fitness gains.

HIIT (High-Intensity Interval Training) alternates between intense bursts at 85-95% of max heart rate and recovery periods at 60-70%. This calculator shows both your work and recovery heart rate targets for an effective HIIT session.

Tips for HIIT Heart Rate

1

HIIT work intervals: 85-95% of max HR. Recovery intervals: 60-70% of max HR

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A typical HIIT session lasts 15-30 minutes — shorter than steady-state cardio but often more effective for fat loss

3

HIIT creates an 'afterburn effect' (EPOC) — you continue burning extra calories for 24-48 hours after the workout

Frequently Asked Questions

What heart rate should I target during HIIT?
Work intervals: 85-95% of max heart rate (e.g., 162-181 bpm for a 30-year-old). Recovery intervals: 60-70% (114-133 bpm). You should feel breathless during work intervals and recover enough to speak during rest intervals.
How often should I do HIIT?
2-3 times per week with at least 48 hours between sessions. HIIT is very demanding on the body — overdoing it leads to overtraining, injury, and burnout. Alternate with steady-state cardio and strength training.
Last updated: April 2026

Data sources: Standard mathematical formulas

For informational purposes only. Not financial, medical, or legal advice. Always consult a qualified professional for decisions affecting your finances or health.

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