Quick start
- Open the Target Heart Rate Calculator.
- Enter age so the tool can estimate maximum heart rate.
- Use the first example, "Age 35: 50-85% zone", if you want to see a filled-out calculation before entering your own values.
- Calculate, read the formula line, then copy the result only after the units and assumptions look right.
Best uses
Start here if one of these sounds like your job. The examples below show which inputs matter most.
- 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.
What this calculator is for
The Target Heart Rate Calculator gives a beats-per-minute range for exercise. It is useful when you want a quick check for moderate or vigorous effort, but it is still an estimate, not a medical limit.
Use it when you want to: Estimate moderate-intensity heart-rate range. Estimate vigorous-intensity heart-rate range.
What to enter
Good answers start with clean inputs. Before calculating, check the labels, units, and dates so the tool is solving the same problem you actually have.
- Enter age so the tool can estimate 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 result beside the simple result.
Example walkthrough
Try the calculator example: Age 35: 50-85% zone. The example result is 93-157 bpm from an estimated 185 bpm max.
- For age 35, the simple maximum estimate is 220 minus 35, which is 185 bpm.
- The 50-85% range is about 93-157 bpm. With a 65 bpm resting pulse, the heart-rate-reserve range is about 125-167 bpm.
Formula and steps
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.
Read the formula note when you need to understand where the number came from, especially before comparing results over time.
How to read the answer
Read the main estimate first, then read the note beside it. For health, pregnancy, nutrition, kidney, alcohol, or training decisions with real consequences, use qualified professional guidance.
- Use the range as a guide, then check how you feel. Moderate effort should usually let you talk, while vigorous effort makes talking harder.
- Heat, sleep, stress, caffeine, medication, fitness, and illness can all make the same heart rate feel different.
Common mistakes to avoid
Most bad results come from a small input mistake or from using a rough estimate for a decision it cannot safely answer.
- Do not push into a zone that feels unsafe just because the calculator shows it.
- Do not treat 220 minus age as exact. It is a quick estimate, not a lab test.
- Do not ignore medical advice about exercise limits, heart conditions, pregnancy, or medication that changes pulse.
What to try next
A related health tool can help check the same topic from another angle, but one number should not replace proper care.
- Use Pace Calculator to compare heart rate with speed.
- Use Calories Burned Calculator for an activity energy estimate.
Sources and safety notes
This guide uses public-health, clinical, or peer-reviewed references where the calculator needs a specific formula or interpretation boundary.
Source links are provided for transparency, but they do not turn the calculator into medical advice or a replacement for professional care.
Worked examples for Target Heart Rate Calculator
93-157 bpm from an estimated 185 bpm max
85-119 bpm from an estimated 170 bpm max
125-167 bpm heart-rate reserve range
FAQ in plain language
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.
Related tools
- Pace Calculator Calculate running, walking, or cycling pace and speed from time and distance.
- Calories Burned Calculator Estimate exercise calories from MET, body weight, and duration.
- Calorie Calculator Estimate daily calories from BMR, activity level, and goal.
Keep exploring
If this guide is close but not exact, these links keep you near the same kind of problem.
- Health & Fitness Browse the full category for related tools that help with the same job.
- All free tools Search the complete Access Free Tools library by task, category, or tool name.
- All calculator and utility guides Find more plain-language examples, formulas, mistakes, and result explanations.
- Free calculator resources Start here when you are not sure which calculator page fits.
Privacy and copying results
Recent answers stay visible only while you work in the current browser tab. They are not sent to a server.
Use Copy answer when you want to save the inputs and result in notes, homework, a message, or a project list. Check the units, labels, and limits before copying.