Health calculators

Adult BMI divides weight in kilograms by height in meters squared and places the value in an adult screening range. It does not assess body composition or diagnose a condition. The page links to the source for the categories and explains when the measure is unsuitable.

Pregnancy Due Date uses the first day of the last menstrual period and a simplified cycle-length shift to estimate a date. It separately counts weeks since the last period. Ultrasound and clinical assessment can change dating; ask a qualified clinician for care decisions.

TDEE estimates adult daily energy expenditure from a predicted resting value and an illustrative full-day activity factor. Its food-Calorie number describes modeled expenditure, not a prescribed intake or weight-change plan. The result states the original equation's population and activity assumptions.

Macro Split converts a Calorie total and three percentages supplied by the visitor into approximate grams. It does not choose a diet or an energy target. The TDEE page reports resting expenditure but does not claim to measure basal metabolic rate.

Predicted BMR applies the weight-only rows of FAO/WHO/UNU 1985 Table 5 without an activity factor; it is a different named method from the predicted REE used inside TDEE. RFM estimates body-fat percentage from height and a specifically measured waist, without diagnosing a condition or claiming to replace a scan.

Water Intake subtracts recorded beverage volume from a goal supplied by the visitor and counts selected container sizes. It does not infer an individualized water requirement or prescribe a daily target.