Health Calculators
Calorie, macro, and pregnancy math — clear numbers with the uncertainty stated plainly.
Real numbers, with the uncertainty stated up front
Health estimates are inherently approximate — a TDEE formula or a due-date calculation is a population-level estimate, not a personal guarantee, and these tools say so directly instead of presenting a guess as fact. The TDEE & macro calculator uses your stats and activity level to estimate maintenance calories and a protein/carb/fat split for cutting, maintaining, or bulking. The pregnancy calculator estimates a due date from your last period, conception date, or IVF transfer date, and can also estimate your next fertile window. Neither replaces a conversation with a doctor.
TDEE, Calorie & Macro Calculator
Enter your stats and activity level to get your TDEE, maintenance calories, a calorie deficit target for weight loss, and a protein/carb/fat split for cutting, maintaining, or bulking.
Pregnancy Due Date & Ovulation Calculator
Estimate your due date from your last period, conception date, or IVF transfer — or find your next ovulation and fertile window.
BMI Calculator
Enter height and weight in metric or US units to get your Body Mass Index, WHO category, and a healthy weight range for your height.