Free fitness tools
Quick, free calculators for the gym and the kitchen — no account, no ads. Built by Plyko, the all-in-one AI fitness & nutrition app.
One-rep max calculator
Estimate your 1RM from any weight and rep count (Epley + Brzycki), with a full training-percentage table.
Open tool →Macro & TDEE calculator
Get your daily calories and a protein/carb/fat split for cutting, maintenance or bulking.
Open tool →Track it for real in the Plyko app
These calculators give you a starting point. Plyko logs your actual lifts, macros and progress — for free, on iOS and Android — and its AI adapts your targets as you go.