Calculators
Fitness & Sports
Pace, heart-rate zones, training loads and race predictions. · 12 tools
Plan training and predict performance: convert paces, set heart-rate zones from your max or resting pulse, estimate your one-rep max without testing it, and predict race times from a recent result. The sports tools use published formulas (Karvonen, Epley/Brzycki, Riegel) that are stated on each page.
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