Health

Calculate your Body Mass Index and find your healthy weight range.

Calculate your Basal Metabolic Rate — the calories your body burns at rest.

Calculate your daily calorie needs (TDEE) and set a target for your weight goal.

Calculate your estimated glomerular filtration rate using the CKD-EPI 2021 equation.

Calculate your baby's due date using Naegele's Rule based on your last menstrual period.

Estimate your BAC using the Widmark formula based on drinks, weight, sex, and time.

Classify your blood pressure reading using the AHA/ACC 2017 guidelines.

Calculate BMI-for-age for children using CDC growth chart percentiles.

Estimate your body fat percentage using the US Navy circumference method.

Calculate how long it will take to reach your goal weight based on your daily calorie deficit.

Estimate your conception date from your last menstrual period or due date.

Calculate your 5 training heart rate zones using the Karvonen or simple percentage method.

Calculate your ideal body weight using 4 validated formulas — Devine, Robinson, Miller, and Hamwi.

Calculate your lean body mass using the Boer, James, or Hume formula.

Calculate your daily protein, fat, and carb targets from your TDEE and fitness goal.

Find your most fertile days and predicted ovulation date based on your menstrual cycle.

Predict your next period, ovulation date, and fertile window based on your cycle.

Track your pregnancy weight gain against IOM 2009 guidelines by trimester.

Find your pace per km and per mile, plus average speed, from a distance and time.

Find the best times to wake up or go to bed based on 90-minute sleep cycles.

Calculate your Total Daily Energy Expenditure using the Mifflin-St Jeor formula with detailed activity levels.

Calculate your waist-to-hip ratio and assess your metabolic health risk.

Calculate your daily water needs based on weight, activity level, and climate.

Estimate calories burned for common activities using MET values.

Evaluate cardiovascular risk from your lipid panel (TC, HDL, LDL, TG).

Estimate aerobic fitness (VO₂max) from a Cooper 12-min run or 1.5-mile run.