Heart-rate zones (Karvonen)
Calculate your 5 Karvonen training heart-rate zones from age and resting heart rate.
Open calculatorOne-rep max (1RM)
Epley formula: 1RM = weight × (1 + reps / 30). Most accurate for working sets of 2 to 10 repetitions performed near muscular failure.
kg
Estimated 1RM
93.3 kg
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Educational estimate only. Not medical, tax, legal or financial advice.