10 calculators

Fitness & Performance

1RM, VO2 max, target heart rate, running pace, Wilks, and performance tools.

1RM Calculator

Calculate your one rep max using Epley, Brzycki, and Lombardi formulas. Free 1RM...

Calculate your heart rate training zones (fat burn, cardio, peak) using the Karv...

Calculate running pace, finish time, or distance. Free pace calculator for 5K, 1...

Predict race times at any distance from a known race result using Peter Riegel&#...

Calculate your Sinclair score for Olympic weightlifting totals. Coefficient = 10...

Find your strength percentile for bench press, squat, deadlift, and overhead pre...

Calculate your VDOT from any race time using Jack Daniels' running formula....

Calculate your VO2 max using the Cooper 12-minute run test or Rockport walking t...

Generate your Wendler 5/3/1 training cycle: training max (90% of 1RM), all worki...

Calculate your Wilks score to compare powerlifting totals across bodyweight clas...