Health calculators

Estimate circumference-based body-fat percentage using the established neck, waist, hip, and height equations.

Calculate adult body mass index, CDC weight category, and the weight range corresponding to BMI 18.5 through 24.9.

Estimate body-fat percentage with the circumference-based U.S. Navy method and calculate fat and lean mass.

Compare bust, waist, and hip proportions to describe a geometric body-shape pattern and waist-to-hip ratio.

Calculate the adult weight interval corresponding to BMI 18.5 through 24.9 for a given height.

Compare four commonly cited height-based reference-weight formulas and the adult healthy-BMI range.

Compare Boer, Hume, and James lean-body-mass estimates from height, weight, and sex.

Calculate current BMI and reference weights for BMI 18.5 and the historically cited 17.5 threshold.

Compare current weight with adult BMI 25 and 30 reference thresholds for the same height.

Estimate blood alcohol concentration from standard-drink alcohol mass, body weight, sex coefficient, and elapsed time.

Estimate body surface area with the Mosteller, Du Bois, and Haycock equations.

Estimate adult glomerular filtration rate with the race-free 2021 CKD-EPI creatinine equation.

Estimate basal metabolic rate and maintenance energy with the Mifflin-St Jeor equation.

Estimate daily calories to maintain, lose, or gain weight from the Mifflin-St Jeor resting-energy equation.

Estimate calorie targets and daily carbohydrate allowances for weight maintenance, loss, and gain from age, sex, height, weight, and activity.

Estimate calorie targets, total fat range, and saturated-fat limits for weight maintenance, loss, and gain.

Estimate the December 2015 to November 2021 food points value from calories, sugar, saturated fat, and protein.

Estimate daily protein, carbohydrate, and fat targets from energy needs, goal, and a chosen macro split.

Estimate daily protein recommendations from body weight and calorie needs using ADA, CDC, and WHO reference methods.

Estimate total daily energy expenditure from resting energy and an activity multiplier.

Estimate a child's mid-parental adult height range from biological-parent heights and the sex adjustment used by the method.

Estimate exercise energy expenditure from activity MET value, body weight, and duration.

Estimate maximum heart rate and training zones with both percent-maximum and Karvonen heart-rate-reserve methods.

Estimate likely conception and fertile-window dates from a period date, due date, or known birth date.

Estimate a pregnancy due date from last menstrual period, conception, or embryo-transfer date.

Estimate ovulation date, fertile window, and next period from the last period and typical cycle length.

Project upcoming period and ovulation dates from a typical cycle and period length.

Estimate due date, conception window, trimester dates, and current gestational age from the last menstrual period.

Estimate conception and fertile-window dates from a due date or last menstrual period.

Compare current pregnancy weight gain with Institute of Medicine reference ranges based on pre-pregnancy BMI.