Free Tool — Heart Rate Zones
Find Your Estimated Heart Rate Zones
Pick a method, enter your age and see five color-coded training zones with beats per minute, effort labels and a talk test. For athletes and active adults.
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Updated October 24, 2026 · Free to use · Bookmark it
Heart Rate Zone Calculator
Pick a method, enter your age, and see five estimated zones. Every number here is an estimate from a formula, not a measured maximum. The tool gives general information for healthy adults and is not medical advice.
Your Estimated Zones
Enter your age and press Calculate. Your estimated maximum, five zones and a color chart appear here.
Follow Your Doctor's Targets If This Applies to You
People with heart conditions, people on beta blockers or other medication that changes heart rate, pregnant people and anyone with symptoms follow their doctor's targets, not this tool.
Stop exercise and get medical care for chest pain, dizziness, fainting or unusual shortness of breath.
Athletic Bodies Revamped · Heart Rate Zone Card · (408) 561-8431 · athleticmassagetherapist.com
Name: ______________________________ Date: ______________
Open the web page and enter your age to fill this card.
Estimated zones from a formula, not a measured maximum. Educational information only. People with heart conditions, on beta blockers or other heart-rate-altering medication, pregnant people and anyone with symptoms follow their doctor's targets. Stop exercise and get medical care for chest pain, dizziness, fainting or unusual shortness of breath. Athletic Bodies Revamped, 220 Thunderbird Dr, Richmond Hill, GA 31324.
How to Take Your Resting Heart Rate
Resting means sitting or lying down but awake. Cleveland Clinic names a calm moment with no coffee, no stress and no movement as the time for a good reading.
- Sit or lie down, awake and calm. Get a timer.
- Turn one arm palm up. Use the index and middle fingers of your other hand to trace a line from the base of the thumb down to the wrist bone.
- Move your fingers slightly inward until you feel a groove. Press gently. If you feel nothing, press a little more with the fingertips.
- Count each pulse for 30 seconds. Double the count. That is your pulse in beats per minute.
Cleveland Clinic gives 60 to 100 beats per minute as the typical adult resting range, with lower rates common in athletes. A pulse that skips, jumps or races at rest, or comes with dizziness, calls for a call to a health care provider. Cleveland Clinic advises a provider's OK before checking the neck pulse, so this tool teaches the wrist only.
Three Methods and Their Known Error
All three start from an estimated maximum. A study of 99 adults on a treadmill found wide gaps between measured and estimated maximums for every formula it tested, and advised using graded exercise test data to find a measured maximum.
220 Minus Age
Age 40 gives 180. Reported standard deviation: 10 to 12 beats per minute.
Tanaka and colleagues found that it underestimates maximal heart rate in older adults.
Tanaka
208 minus 0.7 × age. Age 40 gives 180. Built from 351 studies (18,712 people) and checked in 514 healthy adults. The authors found no difference by sex or by habitual activity level.
Heart Rate Reserve
Target = resting + percent × (estimated maximum − resting). Resting 60, maximum 180, 70 percent gives 60 + 0.7 × 120 = 144.
How to Read the Zones
The five zones follow the ACSM intensity categories (10th edition, 2018), as tabulated in a peer-reviewed review. Each zone runs from its lower percent up to one beat below the next zone's lower percent. Other pages print slightly different bands. Cleveland Clinic lists 77 to 93 percent of maximum for vigorous effort, while the ACSM table runs 77 to 95. The tool shows the ACSM bands only.
| Zone | Of Estimated Maximum | Of Heart Rate Reserve | Borg Effort (6–20) |
|---|---|---|---|
| 1 Very Light | under 57% | under 30% | under 9 |
| 2 Light | 57–63% | 30–39% | 9–11 |
| 3 Moderate | 64–76% | 40–59% | 12–13 |
| 4 Vigorous | 77–95% | 60–84% | 14–17 |
| 5 Very Hard to Maximal | 96–100% | 85–100% | 18–20 |
The Talk Test
- Zone 3: you talk but do not sing (CDC).
- Zone 4: you say no more than a few words without a breath (CDC, vigorous).
- Zones 1 and 2: easier than moderate, so talking and singing come easily.
- Zone 5: harder than the CDC vigorous description, so a word or two at a time.
When the numbers and the talk test disagree, trust how you feel and ease off. A printable zone card is one tap away: press Print Zone Card in your results, or the Print button at the top of the page.
Who Follows Their Doctor's Targets
Formulas suit healthy adults. These groups follow a doctor's targets instead:
- People with heart conditions, or with chronic conditions or symptoms. The Physical Activity Guidelines place them under a health care practitioner's care.
- People on beta blockers or other medication that changes heart rate. Cleveland Clinic lists beta blockers among medicines that lower heart rate.
- Pregnant people. Cleveland Clinic notes that heart rate runs higher during pregnancy, and the Physical Activity Guidelines place pregnant people under a practitioner's care.
- Anyone with symptoms during exercise.
Stop exercise and get medical care for chest pain, dizziness, fainting or unusual shortness of breath. Cleveland Clinic lists these as symptoms that call for medical attention.
Ask your doctor before you start a new training plan if any of the above fits you.
Sources and Methodology
- Tanaka H, Monahan KD, Seals DR: Age-Predicted Maximal Heart Rate Revisited (J Am Coll Cardiol 2001;37:153-6) — Source for 208 minus 0.7 times age; 351 studies with 18,712 people plus a lab study of 514 healthy adults; the finding that 220 minus age underestimates maximal heart rate in older adults
- Shookster D, et al.: Accuracy of Commonly Used Age-Predicted Maximal Heart Rate Equations (Int J Exerc Sci 2020;13:1242-50) — Source for the reported 10 to 12 beat standard deviation of 220 minus age and for the wide individual error of both formulas in a 99-person treadmill study
- Fahey M, et al.: The Value of High Intensity Locomotor Training Applied to Patients With Acute-Onset Neurologic Injury (Arch Phys Med Rehabil 2022), Table 1 — Source for the zone percentage bands and Borg effort ranges, which the table reproduces from the ACSM Guidelines for Exercise Testing and Prescription, 10th edition (2018)
- Cleveland Clinic: Heart Rate Reserve — Source for heart rate reserve as maximum minus resting heart rate (the Karvonen method), the 10 to 12 beat error note on 220 minus age, and the resting-rate measuring conditions
- Cleveland Clinic: How to Check Your Pulse — Source for the wrist pulse method: two fingers, groove inside the wrist bone, count for 30 seconds and double
- Cleveland Clinic: Heart Rate — Source for the resting definition, the 60 to 100 beat typical adult range, the effect of beta blockers and pregnancy, and the symptoms that call for medical attention
- CDC: How to Measure Physical Activity Intensity — Source for the talk test: moderate effort allows talking but not singing; vigorous effort allows only a few words before a breath
- Piercy KL, Troiano RP, et al.: The Physical Activity Guidelines for Americans (JAMA 2018;320:2020-8) — Source for the advice that adults with chronic conditions or symptoms, and pregnant people, stay under a health care practitioner's care
- Karvonen MJ, Kentala E, Mustala O: The Effects of Training on Heart Rate (Ann Med Exp Biol Fenn 1957;35:307-15) — Original paper behind the Karvonen name (citation record only)
Questions About This Tool
Which Heart Rate Method Is Most Accurate?
None measures your true maximum. A 99-person treadmill study found wide individual error for both 220 minus age and Tanaka, about 21 to 23 beats above and below the measured value. That study advises using graded exercise test data to find a measured maximum. Ask your doctor about testing.
Why Do the Methods Give Different Numbers?
Each uses a different formula. Tanaka gives a higher estimated maximum than 220 minus age above age 40 and a lower one below age 40. Both are group averages, so your own maximum sits above or below the estimate.
What Is Heart Rate Reserve?
It is your estimated maximum heart rate minus your resting heart rate. The Karvonen method adds a percentage of that reserve to your resting rate to set each zone.
Do Beta Blockers Change My Zones?
Yes. Cleveland Clinic lists beta blockers among medicines that lower heart rate. People on beta blockers or other medication that changes heart rate follow their doctor's targets, not a formula.
What Does the Talk Test Mean?
The CDC describes moderate effort as talking but not singing, and vigorous effort as saying no more than a few words without a breath. Use it as a check on the numbers.
Does the Tool Store My Numbers?
Only if you tick Remember My Numbers. The numbers stay in your own browser on this device. Press Clear Saved Entries to delete them. The tool needs no account and sets no cookies.
Want Hands-On Help With Sports Massage?
Maya Sharpe, LMT, 220 Thunderbird Dr, Richmond Hill, GA. Monday to Friday 9 AM to 8 PM, Saturday 9 AM to 1 PM, Eastern Time.