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Target Heart Rate & Training Zones Calculator

Training in targeted cardiovascular heart rate zones improves aerobic mitochondrial density, fat oxidation, and VO2 max efficiency without overtraining.

Measured upon waking before getting out of bed.

Calculated Result
137 – 150 bpm

Zone 2 Aerobic Heart Rate

Estimated Max HR

187 bpm

Zone 2 (Endurance Base)

137 – 150 bpm

Zone 4 (Threshold)

162 – 175 bpm

Resting Heart Rate

62 bpm

Calculation Breakdown

  1. Estimated Maximum Heart Rate (Tanaka Eq.)HRmax = 208 − (0.7 × 30) = 187 bpm\text{HR}_{\text{max}} = 208 - 0.7 \cdot \text{Age}
  2. Heart Rate Reserve (Karvonen Method)HRR = 187 HRmax − 62 HRrest = 125 bpm\text{HRR} = \text{HR}_{\text{max}} - \text{HR}_{\text{rest}}
  3. Zone 2 Cardio Sweet Spot (60–70% HRR)Target: 137 to 150 bpm\text{THR} = \text{HR}_{\text{rest}} + (\text{HRR} \cdot \%)

Training Zone Ceiling (BPM)

Interactive visualization based on your current inputs

Max BPM
0.04794140187Zone 1 (60%)Zone 2 (70%)Zone 3 (80%)Zone 4 (90%)Zone 5 (100%)ZoneBPM

What Is the Target Heart Rate & Training Zones Calculator?

A Target Heart Rate Calculator determines optimal exercise intensities for conditioning.

How Does the Target Heart Rate & Training Zones Calculator Work?

Combines Tanaka maximum heart rate with Karvonen reserve formulas.

Target Heart Rate & Training Zones Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

HRmax=208−0.7⋅A,THR=HRrest+[%⋅(HRmax−HRrest)]\text{HR}_{\text{max}} = 208 - 0.7 \cdot A, \quad \text{THR} = \text{HR}_{\text{rest}} + [\% \cdot (\text{HR}_{\text{max}} - \text{HR}_{\text{rest}})]

Tanaka maximum heart rate formula combined with Karvonen heart rate reserve (HRR).

How to Use the Target Heart Rate & Training Zones Calculator

  1. Enter age and optional resting pulse.

Step-by-Step Example Calculation

30-Year-Old with 62 bpm Resting Heart Rate

Input Values:

age:30
restingHr:62
Worked Steps: Estimated max HR is 187 bpm. Zone 2 aerobic base range is 137 to 150 bpm.

Understanding Your Result

Breaks down Zones 1 through 5 in beats per minute.

Factors That Affect the Result

  • Resting pulse, cardiovascular conditioning, caffeine, and ambient temperature.

When Should You Use This Calculator?

  • Endurance running, cycling, rowing, and HIIT workout programming.

Assumptions & Limitations

  • Age-predicted formulas have a standard deviation of ~7-10 bpm.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Tanaka & Karvonen exercise physiology standards.

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