All calculators

Every tool is free, runs entirely in your browser, and is built on peer-reviewed formulas.

Calorie Deficit Calculator

Find your maintenance calories (TDEE), your ideal daily calorie target, and an interactive week-by-week weight loss forecast with a predicted goal date.

BMI Calculator

Calculate your Body Mass Index instantly with a beautiful visual scale, see your category, and understand what your score actually means for your health.

Water Intake Calculator

Get a personalized daily water recommendation based on your weight, activity level, and climate — in litres and glasses, with a visual hydration tracker.

Ideal Weight Calculator

Estimate your ideal body weight using four peer-reviewed formulas (Devine, Robinson, Miller, Hamwi) plus your healthy BMI range, visualized beautifully.

Coming soon

Body Fat · Macros · Protein · TDEE · Running Pace · Calories Burned · Heart Rate Zones · Sleep — all built on the same shared engine.