Exercise Intensity Calculator — Calculate Heart Rate Zones & Calorie Burn

Exercise Intensity Calculator

Calculate your target heart rate zones, exercise intensity levels, and estimated calorie burn. Optimize your workouts for fat burning, endurance, and cardiovascular health.

Step 1: Personal Information

70 bpm
75 kg

About Resting Heart Rate

A lower resting heart rate generally indicates better cardiovascular fitness. The average resting heart rate is 60-100 bpm. Well-trained athletes may have resting heart rates of 40-60 bpm.

Step 2: Exercise Parameters

30 min
70%

Understanding Exercise Intensity

Moderate intensity exercise (50-70% of max HR) improves cardiovascular health. High intensity (70-85% of max HR) improves athletic performance and burns more calories per minute.

Exercise Intensity Results

Summary
Heart Rate Zones
Breakdown

Target Heart Rate for Your Workout

130-155 bpm
Moderate Intensity (70% of max HR)
Maximum Heart Rate
185 bpm
Heart Rate Reserve
115 bpm
Estimated Calorie Burn
315 kcal
Exercise Intensity Level
Moderate

Heart Rate Training Zones

Zone Intensity % of Max HR Heart Rate Range Training Effect

Using Heart Rate Zones

Zone 1 (Very Light): Recovery, warm-up, cool-down
Zone 2 (Light): Builds endurance, improves fat burning
Zone 3 (Moderate): Improves aerobic capacity
Zone 4 (Hard): Increases lactate threshold, improves speed
Zone 5 (Maximum): Develops maximum performance, improves power

Calorie Burn Breakdown

Exercise Intensity Formula

Maximum Heart Rate (MHR) = 220 – Age

Target Heart Rate = MHR × Intensity %

Calories Burned = METs × Weight (kg) × Duration (hours)

MET (Metabolic Equivalent of Task) is a measure of exercise intensity where 1 MET = energy expended at rest. The higher the MET value, the more intense the exercise.

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