Target Heart Rate Calculator - Calculate Exercise Heart Rate Zones

Target Heart Rate Calculator

Calculate your optimal training heart rate zones for fat burn and endurance.

Age (Years):

Resting Heart Rate (BPM):

Max Heart Rate (HRmax)

0 BPM

Fat Burn Zone (50%-70%)

0 - 0 BPM

Cardio / Aerobic Zone (70%-85%)

0 - 0 BPM

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Target Heart Rate Calculator: Optimize Your Exercise Intensity

Monitoring your exercise intensity through target heart rate zones ensures that you train efficiently while avoiding overexertion. Our online Target Heart Rate Calculator calculates your maximum heart rate (HRmax) and target exercise zones for fat loss, cardiovascular endurance, and peak physical conditioning.

How Target Heart Rate Is Calculated

Heart rate zones are determined by measuring beats per minute (BPM) relative to your theoretical maximum heart rate. Advanced calculations utilize the Karvonen Formula, incorporating your Resting Heart Rate (RHR) to establish personalized intensity boundaries.

Maximum Heart Rate (HRmax):
HRmax = 220 - Age

Karvonen Target Heart Rate Formula:
Target HR = [(HRmax - RHR) × Intensity %] + RHR

Step-by-Step Calculation Example

Consider a 30-year-old individual with a resting heart rate of 60 BPM aiming for a 70% intensity cardio workout:

1. Max Heart Rate: 220 - 30 = 190 BPM
2. Heart Rate Reserve (HRR): 190 - 60 = 130 BPM
3. Target HR at 70%: (130 × 0.70) + 60 = 151 BPM

Heart Rate Training Zone Reference Table

Zone	Intensity Level	Primary Benefit
Zone 1 (Warm Up)	50% – 60% HRmax	Active recovery, gentle blood circulation, and warm-up.
Zone 2 (Fat Burn)	60% – 70% HRmax	Optimizes body fat oxidation and builds basic aerobic endurance.
Zone 3 (Aerobic/Cardio)	70% – 85% HRmax	Improves cardiovascular capacity, stamina, and lung volume.
Zone 4 (Anaerobic)	85% – 95% HRmax	Increases high-intensity speed performance and lactic acid threshold.

Frequently Asked Questions (FAQs)

What is a healthy normal resting heart rate?

For most healthy adults, a normal resting heart rate ranges from 60 to 100 beats per minute. Trained athletes often exhibit lower resting heart rates (40 to 60 BPM).

Why use resting heart rate in the calculation?

The Karvonen formula accounts for Resting Heart Rate (RHR), offering a much more customized and precise training target compared to age-only estimation models.