Target Heart Rate Calculator
Enter HRmax and a percent or fraction. 190 and 70 give 133 bpm. 180 and 0.6 give 108. 200 and 85 give 170. One number, not full zones.
Results
Enter data and click Calculate.
Not a clinic verdict and not a stress test. The calculator multiplies HRmax. It does not subtract resting pulse (Karvonen).
How it works
Target heart rate in this calculator is HRmax times a factor. When field b is greater than 1, the calculator divides it by 100. 190 and 70 means 190 × 0.70 = 133. The result is 133 bpm. 200 and 85 gives 170 bpm.
A fraction stays a fraction. 180 and 0.6 is 180 × 0.6 = 108 bpm, not 180 × 0.006. Typed 70 and entered 0.7 at the same HRmax 190 both give 133, because 70 is greater than 1.
You enter HRmax yourself. The 220 minus age estimate lives on maximum heart rate: age 30 is 190. The full 50, 60, 70, 80, and 90 percent marks from that same 190 live on heart rate zones.
Here one percent field, one result. There is no resting pulse, so this is not Karvonen. 133 bpm at 190 and 70% is a point on the HRmax scale, not a zone band.
Enter HRmax, enter 70 or 0.7, then Calculate. Zero HRmax leaves a blank. A comma in 0.6 parses. A pace estimate, not a clinic plan.
190 and 70 give 133 bpm. 180 and 0.6 give 108 bpm. 200 and 85 give 170 bpm. The same 70% at another HRmax gives another number.
result = HRmax × (b > 1 ? b/100 : b)
HRmax times a percent or a fraction. 190 and 70 give 133 bpm. 180 and 0.6 give 108 bpm.
133 bpm
108 bpm
170 bpm
Related calculators
Common questions
What target heart rate at 190 and 70%?
133 bpm. 190 × 0.70, then a round.
Is 70 a percent or a fraction?
70 is greater than 1, so the calculator divides by 100. 0.6 stays 0.6.
What about 180 and 0.6?
108 bpm. The fraction does not go through 100.
What about 200 and 85%?
170 bpm. 200 × 0.85.
Does the calculator compute HRmax from age?
No. You enter HRmax. 220 minus age lives on maximum heart rate.
How is this different from heart rate zones?
There, five marks from age. Here one percent and one bpm result.
Is this Karvonen?
No. There is no resting pulse. Only HRmax times a factor.
What if HRmax is 0?
The result is a blank, because HRmax must be positive.
Is 133 bpm a clinic verdict?
No. A pace estimate from a product. A watch or a stress test can differ.
How do I calculate target heart rate from HRmax?
Result = HRmax × intensity. 70 or 0.7 is the same (a number above 1 is divided by 100). At 190 and 70%: 133 bpm. At 180 and 0.6: 108. At 200 and 85%: 170.
Is this the Karvonen method?
No. Karvonen uses heart-rate reserve (HRmax − resting). Here you multiply HRmax alone by a percent. Full zone bands live on the heart-rate zones page.
Where do I get HRmax if there is no age field?
Enter a ready HRmax or compute it on the max heart-rate page (for example 220 − age). This calculator does not estimate HRmax from age.
Is 133 bpm a clinic training plan?
No. It is an estimate from a product. Medication, heart disease, and individual thresholds change a safe range — leave that call to a clinician.
Knowledge sources
The calculator multiplies HRmax. It does not subtract resting pulse (Karvonen).
Page updated in 2026.