Calculators & Timers


Running calculator to predict pace


Rowing calculator to predict pace


Online interval timer


1-15 Rep Max Calculator

Prilepin’s Chart – for Olympic weightlifting (don’t count your warm-up only lifts at your heaviest percentage)

Percent Reps/sets Optimal Total range
55–65 3–6 24 18–30
70–80 3–6 18 12–24
80–90 2–4 15 10–20
90+ 1–2 4 10 

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