BMR Calculator
Calculate basal metabolic rate and daily calorie needs.
- 100% free
- Private in browser
- No signup
- No watermarks
Result
- Sedentary
- 1,979
- Light
- 2,267
- Moderate
- 2,556
- Active
- 2,844
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About BMR Calculator
Your basal metabolic rate (BMR) is the calories your body burns at complete rest. BMR Calculator on TheToolss uses the accurate Mifflin-St Jeor equation with your gender, weight, height, and age, then estimates total daily energy expenditure (TDEE) for sedentary to very active lifestyles. Use it as a starting point for weight goals and meal planning. It is an estimate, not medical advice. It runs in your browser — free, private, and no signup.
How to use BMR Calculator
- Select your gender.
- Enter weight, height, and age.
- Read your BMR and calories by activity level.
Key features
- Accurate Mifflin-St Jeor equation
- BMR plus TDEE by activity level
- Metric inputs (kg, cm)
- Instant results
- Private in-browser calculation
Frequently asked questions
- Is the BMR Calculator free?
- Yes. It is free on TheToolss with no signup.
- What is BMR?
- Basal metabolic rate is the number of calories your body needs at rest to keep basic functions running.
- What is the difference between BMR and TDEE?
- TDEE (total daily energy expenditure) is BMR multiplied by an activity factor, reflecting the calories you burn including movement and exercise.
- Which equation is used?
- The Mifflin-St Jeor equation, which is widely regarded as more accurate than the older Harris-Benedict formula.
- Is this medical advice?
- No. It provides estimates only. Consult a professional for personalized nutrition guidance.
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