Estimated maximum heart rate and training zones by formula.
Maximum heart rate
190 bpm
estimate — varies by person
50% zone
95 bpm
70% zone
133 bpm
85% zone
162 bpm
Advanced, AI-powered online calculators with detailed results, charts and plain-English explanations. 300+ free tools, no sign-up required.
GKCalculators home — free online calculators with detailed results and AI insights.