Health calculators for BMI, body fat, calories, and more
Calculate your Body Mass Index (BMI) using metric or imperial units. Get instant results and understand your BMI category.
Calculate your body fat percentage using the US Navy method. Get accurate body fat estimates based on your measurements and understand your body composition.
Calculate your daily calorie needs based on your age, gender, weight, height, and activity level. Understand your BMR, TDEE, and calorie requirements for weight loss or gain.
Calculate your due date, pregnancy week, and trimester based on your last menstrual period (LMP) or conception date. Track your pregnancy progress with our free pregnancy calculator.
Health calculators provide quick estimates for common metrics such as body mass index (BMI), daily calorie needs, and body composition. They are useful for tracking trends and setting rough targets, but they are not a substitute for medical advice or professional assessments.
BMI is a simple ratio of weight to height used by health organizations to classify underweight, normal weight, overweight, and obesity. Our BMI calculator supports both metric and imperial units. BMI does not distinguish muscle from fat, so athletes or very muscular individuals may get results that look "overweight" even when they are healthy. For a more detailed view of body composition, our body fat calculator uses additional measurements to estimate body fat percentage.
Knowing your approximate daily calorie needs helps with weight maintenance, loss, or gain. Our calorie calculator estimates total daily energy expenditure (TDEE) based on age, sex, weight, height, and activity level. These are estimates; individual needs vary. Use them as a starting point and adjust based on your own results and any guidance from a doctor or dietitian.
Our pregnancy calculator helps estimate due date and current gestational stage from the last menstrual period. It is for general information only; prenatal care and due dates should be confirmed by a healthcare provider.
All health tools on this site are for informational and educational use only. They do not diagnose conditions or replace professional medical or nutritional advice. For personalized guidance, consult a qualified healthcare provider.