Health calculators
Health
Adult formula estimates for BMI, BMR, TDEE, daily calories, and circumference body fat. Not diagnoses.
In this topic
Calculators
01BMI CalculatorEstimate adult Body Mass Index from height and weight in metric or U.S. units. Category labels are secondary CDC screening ranges, not a diagnosis.02Calorie CalculatorEstimate daily calories from adult BMR and a documented activity factor. Maintenance is the primary result; optional offsets stay small.03TDEE CalculatorEstimate Total Daily Energy Expenditure as adult BMR times a labeled activity multiplier. The factor is a planning assumption.04BMR CalculatorEstimate adult Basal Metabolic Rate with the Mifflin–St Jeor equation. This is not a measured metabolic rate.05Body Fat CalculatorEstimate body-fat percentage from neck, waist, and hip circumferences using the documented U.S. Navy method. Not a DEXA scan.
How these are built
Every calculator shows its work.
Each one names the formula it used, and the dated official source behind any figure it did not get from you.
How the numbers work →