Fitorex
Calculators
The numbers, before installing anything
The same equations Fitorex uses internally, open in your browser. Everything is computed on your device: not one value is sent to any server.
Calories and macros
Your daily expenditure and the protein, fat and carb split for your goal.
One-rep max (1RM)
Your estimated max from one set, and the weight for every rep range.
Body composition
BMI, Navy-method body fat, lean mass and FFMI in one go.
Daily water
How much water a day given your weight, activity and today’s training.
What this is and is not
These are population equations with a typical individual error of ±10–15%. They are a starting point, not a measurement: what settles it is what happens on the scale, the tape measure and the mirror over two or three weeks. They do not replace advice from a health professional, nor are they suitable for prescribing a therapeutic diet.
And inside, already filled in
In the app these numbers come from your profile and update with what you log: you never type them twice.
Free. No account required. Works offline from the first launch.