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Target Heart Rate Calculator

Use this target heart rate calculator to review an educational health calculation for target heart rate.

Primary answer
Age-predicted maximum heart rate
Inputs to verify
Age
Use type
Use as a review-only estimate; verify before relying on it.
Keyword intent
target heart rate calculator

Calculator

Target Heart Rate Calculator

Calculates age-predicted maximum heart rate from age. Defaults are filled in so you can review a working example before changing inputs.

years

Whole-year age from 20 to 70, matching the public AHA chart range.

Result

Result reflects the current submitted inputs.

  • Risk C
  • Reviewed 2026-05-26
  • 2 sources
Age-predicted maximum heart rate170 bpm
Target zone lower bound85 bpm
Target zone upper bound145 bpm
Moderate lower bound85 bpm
Moderate upper bound119 bpm
Vigorous lower bound119 bpm
Vigorous upper bound145 bpm
Zone summaryEstimated target zone: 85-145 bpm; moderate: 85-119 bpm; vigorous: 119-145 bpm.
Safety noteGeneral adult exercise guide only; if you have a heart condition, symptoms, or take medication that affects heart rate, ask a health care professional for your target range.

Breakdown

Formula max HR
220 - age
Age used
50 years
  • This is a general adult exercise-intensity estimate, not medical advice or a training prescription.
  • The accepted age range is 20-70 years to match the public American Heart Association chart.
  • The formula does not model resting heart rate, medication, heart conditions, pregnancy, symptoms, training status, heat, altitude, or clinician restrictions.
  • Percentage zone values are rounded to the nearest whole bpm for display.

Accuracy notes

Risk level
C
Reviewed
2026-05-26
Sources
2
Primary result
Age-predicted maximum heart rate

Formula logic is kept in a pure calculator module with fixtures, source notes, and page-visible assumptions.

High-risk estimate

Educational estimate, not advice

This health calculator is for educational estimates only. It does not diagnose, treat, provide medical clearance, or replace advice from a qualified health professional.

Check the reviewed sources, assumptions, and formula limits before using this result for a financial, health, or safety decision.

Review cadence: 12 months; next review due 2027-05-26.

Categories

What the result means

Age-predicted maximum heart rate answers the page's main target heart rate question. Estimated maximum heart rate from 220 minus age. Treat the result as educational context, then read the limitations and assumptions before discussing it with a professional. Use target zone lower bound, target zone upper bound, and moderate lower bound to explain why age-predicted maximum heart rate moved when an input changed. Record the inputs you used and verify any health concern with a qualified professional.

Age-predicted maximum heart rateEstimated maximum heart rate from 220 minus age.
Target zone lower bound50% of age-predicted maximum heart rate.
Target zone upper bound85% of age-predicted maximum heart rate.
Moderate lower bound50% of age-predicted maximum heart rate.

Use the result this way

  1. Start with Age-predicted maximum heart rate, then use supporting outputs only to explain the primary answer.
  2. Verify age before copying the result.
  3. Keep units consistent with the labels shown in the form, stay within the documented minimum and maximum ranges, and use measured values rather than estimates when the formula depends on body measurements.
  4. Record the inputs you used and verify any health concern with a qualified professional.

User job

How to use this calculator

Use Target Heart Rate Calculator when you need age-predicted maximum heart rate, then use target zone lower bound and target zone upper bound to check the context for general wellness education and preparing for a professional conversation.

Best for

  • Understanding a formula-based estimate
  • Seeing which inputs drive a health-related output
  • Reviewing a default example before entering your own age.

Check before relying

  • Health formulas can be population-specific; do not use the result as diagnosis or treatment advice.
  • This is a general adult exercise-intensity estimate, not medical advice or a training prescription.
  • The accepted age range is 20-70 years to match the public American Heart Association chart.
  • Source context: American Heart Association, reviewed 2026-05-26.

Next useful step

  • One Rep Max CalculatorUse next when the fitness task needs estimated 1RM instead of age-predicted maximum heart rate.
  • Pace CalculatorUse next when the fitness task needs pace per mile instead of age-predicted maximum heart rate.
  • Sleep CalculatorUse next when you need recommended sleep from age group and plan from after checking age-predicted maximum heart rate.

Limits of this estimate

  • Supports general adult exercise-intensity education only; it is not medical clearance, a training prescription, or advice for symptoms, heart conditions, medications, pregnancy, heat, altitude, or clinician restrictions.
  • The result depends on user-entered inputs and the documented assumptions; defaults are examples only.
  • Search indexing approval does not downgrade this page from risk level C or turn the result into professional advice.

Formula

Age-predicted maximum heart rate is 220 minus age; target zones use 50-85%, with 50-70% moderate and 70-85% vigorous. Key assumptions: This is a general adult exercise-intensity estimate, not medical advice or a training prescription. The accepted age range is 20-70 years to match the public American Heart Association chart. The formula does not model resting heart rate, medication, heart conditions, pregnancy, symptoms, training status, heat, altitude, or clinician restrictions.

  • Age-predicted maximum heart rate is 220 minus age; target zones use 50-85%, with 50-70% moderate and 70-85% vigorous.
  • This is a general adult exercise-intensity estimate, not medical advice or a training prescription.
  • The accepted age range is 20-70 years to match the public American Heart Association chart.
  • Primary source context: American Heart Association.

Inputs

Enter age for general wellness education and preparation for a professional conversation. Before calculating, keep units consistent with the labels shown in the form, stay within the documented minimum and maximum ranges, and use measured values rather than estimates when the formula depends on body measurements. Age: Whole-year age from 20 to 70, matching the public AHA chart range.

AgeWhole-year age from 20 to 70, matching the public AHA chart range.

Example

Using the default inputs, Target Heart Rate Calculator returns age-predicted maximum heart rate of 170. Adjust age to match your own scenario.

FAQ

How is age-predicted maximum heart rate calculated here?

Age-predicted maximum heart rate is 220 minus age; target zones use 50-85%, with 50-70% moderate and 70-85% vigorous. The first assumption to check is: This is a general adult exercise-intensity estimate, not medical advice or a training prescription.

What does Age-predicted maximum heart rate mean for target heart rate?

Treat the result as educational context, then read the limitations and assumptions before discussing it with a professional. Secondary values such as target zone lower bound, target zone upper bound, and moderate lower bound are there to explain the primary answer, not to replace it.

What should I enter for Age?

Whole-year age from 20 to 70, matching the public AHA chart range. Use years for this field. Keep units consistent with the labels shown in the form, stay within the documented minimum and maximum ranges, and use measured values rather than estimates when the formula depends on body measurements.

What can make the target heart rate answer change?

The answer can change when inputs, units, rounding, or source assumptions change. Compare measurement method, formula population, age range, units, sex or activity assumptions, and clinical context.

Why does the target heart rate example show 170 for age-predicted maximum heart rate?

The default inputs produce 170 for age-predicted maximum heart rate. Treat that as a format and scale check, then replace every default value with your own inputs.

Can the target heart rate result diagnose or prescribe anything?

No. Use it as educational context only. Health formulas can depend on population, measurement method, age range, and clinical context.

Sources

Last reviewed: 2026-05-26

  • officialReviewed 2026-05-26 · Source 2024-08-12
    Target Heart Rates ChartAmerican Heart Association. Maximum heart rate about 220 minus age, target 50-85%, moderate 50-70%, vigorous 70-85%, average-use caveat, and medication/heart-condition warning.
    Scope
    Public target heart-rate guidance and age chart for exercise intensity.
    Supports
    Maximum heart rate about 220 minus age, target 50-85%, moderate 50-70%, vigorous 70-85%, average-use caveat, and medication/heart-condition warning.
    Limits
    Supports general adult exercise-intensity education only; it is not medical clearance, a training prescription, or advice for symptoms, heart conditions, medications, pregnancy, heat, altitude, or clinician restrictions.
  • officialReviewed 2026-05-26 · Source not listed
    What You Can Do to Meet Physical Activity RecommendationsCenters for Disease Control and Prevention. General public-health framing that exercise recommendations vary by age and context; this calculator remains a general adult estimate.
    Scope
    Public physical activity guidance by age group.
    Supports
    General public-health framing that exercise recommendations vary by age and context; this calculator remains a general adult estimate.
    Limits
    Supports general adult exercise-intensity education only; it is not medical clearance, a training prescription, or advice for symptoms, heart conditions, medications, pregnancy, heat, altitude, or clinician restrictions.

Disclaimer

This health calculator is for educational estimates only. It does not diagnose, treat, provide medical clearance, or replace advice from a qualified health professional.