✦AG Health Tools
☆
en · Englishes · Españolde · Deutschfr · Françaisja · 日本語ko · 한국어
All Tools
◒ Body & Weight◐ Nutrition & Energy↟ Steps & Walking♥ Fitness & Cardio◌ Period & Fertility◔ Pregnancy☾ Sleep & Recovery ☆ Favorites Recent tools All Tools
Home›Fitness & Cardio›Heart Rate Zone Calculator
Fitness & Cardio · Evidence-aware tool

Heart Rate Zone Calculator

Build a five-zone heart-rate table using percent of max HR or heart-rate reserve.

🔒 Inputs stay in this browser by default✓ Sources & limitations shown
Calculator
No login · instant result
bpm
Your result
Ready

Enter or adjust the values above, then calculate.

    Compare training zones with transparent heart-rate math

    Build a five-zone heart-rate table using percent of max HR or heart-rate reserve.

    Inputs this tool uses

    • Age
    • Resting heart rate
    • Method

    What you get

    Five-zone heart-rate table.

    Method% max HR

    How to use the Heart Rate Zone Calculator

    1. Enter age, resting heart rate, method.
    2. Select any method, activity level or option shown on this page, then choose Calculate.
    3. Read the main result together with the supporting values, method, assumptions and limitations below before using the estimate.

    How this calculation works

    Heart-rate tools use transparent age-predicted maximum-heart-rate equations and, where selected, heart-rate reserve (Karvonen) arithmetic.

    Method transparency: Results are calculated from the values you enter. Health estimates are educational reference values, not diagnoses or treatment advice.

    Example calculation

    The sample values loaded into the calculator produce 185 bpm max estimate. This example exists to show how the output is structured; replace the sample values with your own inputs for your calculation.

    Assumptions and limitations

    • Energy, fitness and heart-rate outputs are estimates and vary by individual and device.
    • Stop exercise and seek appropriate care if you have concerning symptoms; this tool does not provide medical clearance.

    Sources and review status

    Source set last verified 2026-09-25. No clinician review is claimed unless a real named reviewer is displayed.

    Target Heart Rates ChartAmerican Heart Association · current · verified 2026-09-25General target-heart-rate guidance

    Questions people ask about Heart Rate Zone Calculator

    Are five heart-rate zones medically exact?

    No. Zone systems are training frameworks. This page shows the selected formula and estimated ranges rather than presenting one scheme as a clinical prescription.

    Connected tools

    Continue with the closest related calculation without re-entering sensitive values automatically.

    ♥Maximum Heart Rate Calculator

    Compare age-predicted maximum heart-rate equations and explain individual variability.

    Open tool →    ♥Target Heart Rate Calculator

    Calculate a target heart-rate range using percent of max HR or heart-rate reserve/Karvonen mode.

    Open tool →    ♥Zone 2 Heart Rate Calculator

    Estimate a Zone 2 heart-rate range and explain why different methods can produce different ranges.

    Open tool →
    Medical boundary: AG Health Tools provides educational wellness estimates and private tracking utilities. It does not diagnose conditions, recommend treatment, calculate medication doses, or replace a clinician.
    All Health Tools