Health Calculators

Use these free health calculators to estimate BMI, daily calories, body fat percentage, BMR, ideal weight, running pace, and pregnancy dates.

Each calculator gives quick estimates for planning and education. For medical decisions, always confirm results with a qualified health professional.

Calculate your Body Mass Index (BMI) and find out if you are underweight, normal weight, overweight, or obese.

Calculate your daily calorie needs based on age, sex, height, weight, and activity level.

Estimate your body fat percentage using the US Navy formula with simple body measurements.

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

Find your ideal body weight using four different medical formulas — Robinson, Miller, Devine, and Hamwi.

Calculate your running or walking pace, finish time, or distance for any race or training run.

Calculate your due date, current week of pregnancy, and trimester based on your last menstrual period.

Estimate your fertile window and most likely ovulation date based on your menstrual cycle.

Calculate your pregnancy due date from LMP, IVF transfer date, or ultrasound gestational age.