Metabolism Calculator (BMR/TDEE)

BMR is calories burned at complete rest. TDEE includes your activity level and represents total daily calorie expenditure.

The Mifflin-St Jeor equation (used here) is considered the most accurate for most adults according to the American Dietetic Association.

Eat 500 calories below your TDEE to lose approximately 1 pound per week. Never go below 1,200 calories (women) or 1,500 (men) without medical supervision.

The Metabolism Calculator (BMR/TDEE) is an online tool that lets you calculate your basal metabolic rate and total daily energy expenditure. It is part of NexTool's collection of free tools designed to help you work faster and more efficiently.

Using the Metabolism Calculator (BMR/TDEE) is simple: visit the tool page, enter your data or input into the provided fields, and get instant results. Follow the controls on the page. Some functions require sign-in or a paid plan; see Pricing for limits.

The Free plan includes 10 tool uses per day. Some features require an account or a paid plan. Check the controls on the tool page and Pricing for the applicable limits.

The Metabolism Calculator (BMR/TDEE) returns results based on the inputs and the tool methodology. Check assumptions, units and source dates. Treat projections as estimates. For critical decisions, always consult a qualified professional.

Yes, the Metabolism Calculator (BMR/TDEE) is fully responsive and works perfectly on smartphones, tablets, and desktop computers. Simply open NexTool in your mobile browser and navigate to the tool — no app download required.