Health math,

done for you

Sixteen small tools the &you team uses every day — BMI, BMR, TDEE, macros, body composition, hydration, sleep, and more.

Evidence-based formulas. Everything runs in your browser.

Body composition

BMI CalculatorHeight-to-weight screening Body Fat CalculatorUS Navy tape method Lean Body Mass CalculatorEverything that isn't fat Waist-to-Hip Ratio CalculatorFat distribution + risk Ideal Weight Calculator4 clinical formulas + BMI bands

Energy and Metabolism

BMR CalculatorCalories burned at rest TDEE CalculatorDaily burn with activity Calorie Deficit CalculatorFat-loss target + time to goal Macro CalculatorProtein, carbs, fat in grams

Nutrition and Lifestyle

Protein CalculatorDaily g target by goal Daily Water Intake CalculatorPersonalized hydration target Intermittent Fasting Calculator16:8, 18:6, 20:4, OMAD Sleep CalculatorCycle-aligned bed and wake times

Men's Health

Semaglutide Dose PlannerTitration + loss estimate ED Self-AssessmentValidated IIEF-5 scoring Condom Size GuideFind the right nominal width