KLOORAHow to Find Your Heart Rate Zones for Training
Published 3 November 2026 by Kloora Tools
Quick answer: use the free Heart Rate Zone Calculator to find your maximum heart rate and training zones by age. It runs in your browser, so nothing you enter is uploaded or stored, and there is no signup.
What is the Heart Rate Zone Calculator?
Find your maximum heart rate and training zones by age. People often search for it as "heart rate zone calculator", "max heart rate calculator" or "target heart rate calculator". This free version works on any phone or computer and needs no download.
How to use the Heart Rate Zone Calculator
- Open the Heart Rate Zone Calculator.
- Enter your values in the fields.
- The results update instantly as you type.
- Note or copy the numbers you need.
How it works
Maximum heart rate is estimated as 220 minus your age. The zones are percentages of that maximum: 50 to 60 percent warm up, 60 to 70 fat burn, 70 to 80 aerobic, 80 to 90 hard and 90 to 100 maximum. The estimate varies between people, so treat it as a guide.
Worked example
- Input: Age (years): 30
- Result: Max heart rate: 190 bpm; Warm up (50 to 60%): 95 to 114 bpm; Fat burn (60 to 70%): 114 to 133 bpm; Aerobic (70 to 80%): 133 to 152 bpm; Hard (80 to 90%): 152 to 171 bpm; Maximum (90 to 100%): 171 to 190 bpm
Common uses
- Choose the right intensity for a run or ride
- Keep easy days easy and hard days hard
- Check your heart rate during workouts
Second worked example
Here is the same tool with larger numbers, so you can see how the result scales.
- Input: Age (years): 30
- Result: Max heart rate: 190 bpm; Warm up (50 to 60%): 95 to 114 bpm; Fat burn (60 to 70%): 114 to 133 bpm; Aerobic (70 to 80%): 133 to 152 bpm; Hard (80 to 90%): 152 to 171 bpm; Maximum (90 to 100%): 171 to 190 bpm
Tips for the best result
- Measure yourself the same way each time, ideally in the morning and before eating.
- Use the result as a guide and look at the trend over weeks, not a single day.
- Choose the activity level honestly, because most people overestimate it.
- Talk to a doctor or a qualified coach before making big changes to diet or training.
Common mistakes to avoid
- Entering pounds or inches in a field that expects kilograms or centimetres.
- Treating an estimate as a medical diagnosis.
- Comparing your result with someone of a different age, sex or build.
- Changing several things at once, so you cannot tell what worked.
Heart Rate Zone Calculator compared with doing it by hand
| Heart Rate Zone Calculator | By hand or in a spreadsheet | |
|---|---|---|
| Speed | Instant, results update as you type | Slow, you rebuild the steps each time |
| Accuracy | Same standard method every time | Easy to slip on a formula or a unit |
| Privacy | Runs in your browser, nothing uploaded | Depends on the software you use |
| Cost | Free, no signup | Free or paid software needed |
Try it now
Open the Heart Rate Zone Calculator and try your own numbers or text. If it helps, share it with someone who needs it.
Frequently asked questions
How is max heart rate estimated?
A simple formula is 220 minus your age. It is an estimate and varies between people.
Which zone burns fat?
The moderate zone, about 60 to 70 percent of your maximum, is often used for steady fat-burning exercise.
What does the Heart Rate Zone Calculator do?
Find your maximum heart rate and training zones by age.
How do I use the Heart Rate Zone Calculator?
1. Enter your values in the fields. 2. The results update instantly as you type. 3. Note or copy the numbers you need.
Is my data safe when I use the Heart Rate Zone Calculator?
Yes. Everything runs in your browser on your own device. Nothing you type or choose is uploaded, stored or shared, and no AI service is used.
Does the Heart Rate Zone Calculator work on a phone?
Yes. It works on phones, tablets and computers in any modern browser, with nothing to install.
Do I need an account or a payment to use the Heart Rate Zone Calculator?
No. It is free, has no daily limit, no watermark and needs no signup.
What information does the Heart Rate Zone Calculator need?
You enter: Age (years). The results update instantly as you change any value.
How does the Heart Rate Zone Calculator work?
Maximum heart rate is estimated as 220 minus your age.
Can I use this for "max heart rate calculator"?
Yes. The Heart Rate Zone Calculator is built for exactly that, and it also answers searches such as "heart rate zone calculator" and "target heart rate calculator".
How accurate is the Heart Rate Zone Calculator?
It uses the standard method and shows results to a sensible precision. For legal, medical, financial or safety decisions, confirm important numbers with a qualified professional.
Where can I find more free tools like the Heart Rate Zone Calculator?
Kloora Tools has over 150 free tools for CVs, PDFs, images, Urdu, calculators and everyday tasks. Browse them all from the home page.
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