Health calculators

Free tools to understand your numbers—BMI, ideal weight, metabolism, and calorie needs. No sign-up required.

BMI calculator
Slide height and weight to see your BMI, category, and healthy weight range in real time.
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Ideal weight calculator
Estimate a healthy weight range from your height using BMI and Robinson methods.
Calculate ideal weight →
BMR & TDEE calculator
Find your basal metabolic rate and total daily energy expenditure.
Calculate BMR →
Daily calorie calculator
Daily calorie targets based on your goals, activity level, and body metrics.
Calculate calories →