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Calculate your Body Mass Index, Basal Metabolic Rate, and daily calorie needs — instantly.
Provide age, gender, weight, and height in metric or imperial units.
Choose from five activity levels for accurate calorie estimation.
See BMI category, BMR, TDEE, and calorie targets for weight loss, maintenance, and gain.
Copy all results to your clipboard with one click.
BMI, BMR (Mifflin-St Jeor), and TDEE in a single tool.
Toggle between kg/cm and lbs/ft-in at any time.
See recommended calories for weight loss (−500), maintenance, and gain (+500).
All calculations happen in your browser.
The Mifflin-St Jeor equation, considered the most accurate for estimating resting metabolic rate.
Total Daily Energy Expenditure — your BMR multiplied by an activity factor. It estimates how many calories you burn per day.
BMI does not distinguish between muscle and fat mass, so it may overestimate body fat in muscular individuals.