All tools
Type your stats once. Every calculator shares the same private profile, so you can move between them without re-entering anything.
Calorie Calculator
Find your maintenance calories (TDEE) and a safe daily target to lose weight at the pace you choose. Mifflin-St Jeor, Harris-Benedict and Katch-McArdle.
Weight-Loss Timeline
See exactly when you will reach your goal weight, week by week, with a projection that adapts as your metabolism changes.
Macro Calculator
Turn your calorie target into daily grams of protein, carbs and fat with proven presets or a protein-first custom split.
BMI Calculator
Calculate your BMI, see where it sits on the WHO scale and get the healthy weight range for your height.
Body-Fat Calculator
Estimate body-fat percentage from a tape measure using the U.S. Navy method, plus your lean and fat mass.
Protein Calculator
Get an evidence-based daily protein target for fat loss, maintenance or muscle gain, split across your meals.
Ideal Weight Calculator
Compare the Devine, Robinson, Miller and Hamwi formulas with the BMI-based healthy range for your height.
Water Intake Calculator
A daily water target based on your weight, exercise and climate, with the reasoning behind it.