Fitness & Sports Calculators

    Free fitness calculators for one rep max, running pace, and hydration needs. Science-backed tools for better workouts.

    3 Free Tools

    One Rep Max (1RM)

    Estimate your max lift from any rep set

    Pace Calculator

    Running pace, speed & finish time

    Hydration Calculator

    Daily water intake recommendation

    Formula Guides

    How to Calculate Your One Rep Max (1RM)

    How to Calculate Running Pace

    How to Calculate Your Daily Water Intake