Free & Science-Based

Free Fitness Calculators & Tools

Accurate, science-based calculators to help you track progress, set goals, and optimize your fitness journey. All tools are free and easy to use.

Featured Calculators

Our most popular fitness tools to help you reach your goals

Calculate calories burned during weightlifting workouts based on exercises, sets, reps, and body composition

Calculate calories burned during High-Intensity Interval Training with precise interval timing, exercise selection, and afterburn effect analysis

Calculate exact plate combinations needed to load any barbell weight

Calculate calories burned during Pilates sessions with precise class type analysis, equipment factors, and mind-body fitness tracking

Calculate total training volume by tracking sets, reps, and weights across multiple exercises including bodyweight movements

Generate progressive warm-up sets with optimal weight progression for any lift

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