oXben Heart Rate Zone

Calculate your training zones with Karvonen formula

Leave empty for standard calculation
❤
190
Max HR
—
HR Reserve
Standard
Method

Training Zones

Target Zone Recommendation

How It Works

Standard Formula: Max HR = 220 − Age. Zones are percentages of your maximum heart rate.

Karvonen Formula: When you provide a resting heart rate, zones are calculated as: Target HR = ((Max HR − Resting HR) × intensity%) + Resting HR. This gives more personalized and accurate training zones.

Disclaimer: This tool is for informational purposes only. Consult a healthcare professional before starting any exercise program.