Free Tools

Fitness Calculators

Every calculator here runs on the exact same formulas as the real SanoobFit app, not a simplified marketing version. Pick one, get your number, then see what it actually means for your plan.

BMI Calculator

Body Mass Index, and what it can and cannot tell you.

Calorie Calculator

Your daily target for fat loss, maintenance or muscle gain.

Outdoor exercise, representing daily activity

TDEE Calculator

Total Daily Energy Expenditure, the real number behind your calories.

Fitness tracker showing resting heart rate

BMR Calculator

What your body burns at complete rest.

Body Fat Calculator

Navy method, no calipers needed.

Preparing a healthy meal with balanced macros

Macro Calculator

Real protein, carb and fat targets, not a flat split.

Bowl of grilled chicken, a protein source

Protein Calculator

How much protein you actually need per day.

Ideal Weight Calculator

Four classic formulas, and why body fat % beats them all.

Woman in activewear drinking a bottle of water

Water Intake Calculator

Your daily hydration target, adjusted for climate.

Person wearing a heart rate monitor smartwatch

Heart Rate Zone Calculator

Real training zones using the Karvonen method.

Every tool on this page gives an estimate to guide your plan. None of them replace advice from your own doctor.