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Heart Rate Zone Calculator

Are you training in the right zone? This calculator gives you all 5 heart rate training zones in seconds – using either the simple percentage method or the more accurate Karvonen formula (with resting heart rate). Enter your age and get your personal pulse boundaries instantly.

✓ Granskat av Julian Bronski · uppdaterad juni 2026

Dina uppgifter

years
10100+
bpm
30120+
bpm
0220+

Resultat

Max Heart Rate (HRmax)
Zone 1 – Lower bound (bpm)
Zone 1 – Upper bound (bpm)
Zone 2 – Lower bound (bpm)
Zone 2 – Upper bound (bpm)
Zone 3 – Lower bound (bpm)
Zone 3 – Upper bound (bpm)
Zone 4 – Lower bound (bpm)
Zone 4 – Upper bound (bpm)
Zone 5 – Lower bound (bpm)
Zone 5 – Upper bound (bpm)
VO2max estimate (ml/kg/min)
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Så fungerar Heart Rate Zone Calculator

The calculator uses two established methods:

Vanliga frågor

What is the difference between the percentage method and the Karvonen formula?
The percentage method calculates zones directly as a fraction of maximum heart rate (e.g. Zone 2 = 60–70% HRmax). The Karvonen formula also incorporates resting heart rate and works with the heart rate reserve (HRmax – resting HR). The result is more individualised and is considered more accurate – especially for well-trained individuals with a low resting heart rate.
Which zone should I train in most?
For building endurance and improving fat metabolism, Zone 2 (60–70% HRmax) is ideal – the so-called 'aerobic base'. For performance improvements and race preparation, Zone 4 (80–90%) is added. High-intensity Zone 5 efforts should make up no more than 10–15% of total training volume.
How do I measure my resting heart rate most accurately?
Measure it in the morning immediately after waking, before getting up: count your pulse for 60 seconds, or count for 15 seconds and multiply by 4. A smartwatch with 24h heart rate tracking often shows a nocturnal low that closely approximates the true resting heart rate. Average over 3–5 days for a reliable value.
Inte finansiell eller medicinsk rådgivning. Utan garanti.

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