Age 35, 50-85%
- Estimated max
- 185 bpm
- Heart-rate reserve
- 125-167 bpm
- Intensity
- 50-85%
Target Heart Rate Calculator
Estimate moderate, vigorous, or general exercise heart-rate zones from age, effort range, and optional resting pulse.
Estimate, not diagnosis Formula notes Example inputs Tab-only history
Formula steps
- Estimate maximum heart rate as 220 minus age.
- Multiply maximum heart rate by the selected intensity range.
- If resting heart rate is entered, also show the heart-rate reserve estimate.
- Use breathing, comfort, heat, medication, and medical limits before chasing a number.
How to use the Target Heart Rate Calculator
- Enter your age so the tool can estimate a rough maximum heart rate.
- Choose moderate 50-70%, vigorous 70-85%, or the wider 50-85% range.
- Add resting heart rate if you want the heart-rate-reserve range beside the simple range.
- Use breathing, comfort, heat, medication, symptoms, and clinician advice before chasing a number.
What people use it for
Estimate moderate-intensity heart-rate range.
Estimate vigorous-intensity heart-rate range.
Compare simple max-heart-rate and heart-rate-reserve methods.
Check whether a workout feels close to the intended effort.
Quick examples
Age 35
50-85% zone93-157 bpm from an estimated 185 bpm max
Age 50
Moderate 50-70%85-119 bpm from an estimated 170 bpm max
Resting HR included
Age 35, resting 65, 50-85%125-167 bpm heart-rate reserve range
Need the guide or a nearby tool?
Need a slower walkthrough, a related calculator, or the full library? These links keep you close to the task you started.
- How to use the Target Heart Rate Calculator See slower examples, input meanings, formula notes, result limits, and mistakes to avoid.
- Health & Fitness Browse related calculators and utilities in the same category.
- Calculator and utility guides Find more guides that use real tool inputs and example numbers.
- All free tools Search every live tool, converter, calculator, AI helper, and browser utility.
Frequently asked questions
Plain-language answers about when to use the estimate, what the formula means, what it cannot decide for you, and how privacy works.
When should I use the Target Heart Rate Calculator?
Use it for simple educational checks, trend tracking, or planning tasks like these: Estimate moderate-intensity heart-rate range. Estimate vigorous-intensity heart-rate range. It can help you understand a number, but it cannot explain your whole health situation.
What do the main Target Heart Rate Calculator inputs mean?
Enter your age, choose the effort range, and add resting heart rate only if you want the heart-rate-reserve estimate. Age sets the rough maximum heart rate. The effort range turns that into beats per minute.
What is the Target Heart Rate Calculator doing with my inputs?
In plain language: The calculator estimates maximum heart rate as 220 minus age, multiplies that number by the selected intensity range, and also shows heart-rate reserve when resting pulse is entered. Read the result together with the notes on the page, because health and fitness numbers often need personal context.
How should I read the Target Heart Rate Calculator result?
Read the answer as a training range in beats per minute, not a perfect target you must hit. If the range feels too hard, you feel pain, or a clinician gave you a different limit, slow down and use the safer guidance.
What does 50-70% mean for target heart rate?
It is the common moderate-intensity range. For a 35-year-old, the simple max estimate is 185 bpm, so 50-70% is about 93-130 bpm.
What does 70-85% mean for target heart rate?
It is the common vigorous-intensity range. For a 35-year-old, the simple estimate is about 130-157 bpm, but you should still listen to breathing, comfort, heat, and medical limits.
Why does resting heart rate change the result?
Resting heart rate lets the calculator show a heart-rate-reserve estimate. It starts from your resting pulse, then adds part of the gap between resting pulse and estimated maximum heart rate.
Is 220 minus age exact?
No. It is a quick age-based estimate. Real maximum heart rate can be higher or lower, and fitness level, sleep, heat, stress, and medication can all change how hard a number feels.
Should I chase the top of the zone?
No. Start near the lower end if you are new, coming back after a break, exercising in heat, or unsure how hard to go. A safer workout you can repeat is better than forcing a number.
When should I stop using the number and slow down?
Slow down or stop if you feel chest pain, dizziness, faintness, unusual shortness of breath, or a heart rate that feels wrong for you. Use medical advice before training through warning signs.
Can I use this as medical advice?
This is an exercise-intensity estimate, not medical advice. Ask a clinician what heart-rate limit to use if you have a heart condition, take medication that affects pulse, are pregnant, or feel chest pain, dizziness, or unusual shortness of breath. Use the calculator as a learning tool, then ask a qualified professional about decisions that affect care, pregnancy, medication, nutrition, or safety.
What should I double-check before trusting the result?
Check the units, date, and personal details before reading the answer. For example, pounds and kilograms, inches and centimeters, or a wrong activity level can change the result quickly. If the number feels surprising, rerun it slowly and compare it with the examples.
Does the site save my health inputs?
No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.