Professional calculators for personal trainers. 100% free, no signup, no limits.
Estimate your one-rep max using 4 scientific formulas.
Calculate total daily energy expenditure and calorie targets.
Optimal protein, carb, and fat distribution for your goals.
Calculate Body Mass Index with visual scale.
Estimate body fat percentage using the Navy Method.
Find your daily protein needs based on your goals.
Convert RPE to loads and estimate 1RM with autoregulation.
Compare results from 4 classic formulas.
Calculate your 5 cardio training zones.
Discover how much water you need daily.
Project your income as a personal trainer.
CatalysFit uses AI to generate periodized programs and manage all your clients in one place.
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