BMR & Calorie Calculator
Estimate daily resting metabolic rate (Mifflin-St Jeor) and total maintenance calories.
⚙️ Personal Details
📊 Calorie Estimates
Maintenance Calories (TDEE)
2,650 kcal/day
Basal Metabolic Rate (BMR): 1,710 kcal/day
| Goal | Daily Calories |
|---|---|
| Extreme Weight Loss (0.5 kg/wk loss) | 2,150 kcal |
| Maintain Weight | 2,650 kcal |
| Weight Gain (0.5 kg/wk gain) | 3,150 kcal |
How to Use This Calculator
- Step 1: Enter personal measurements and select your weekly physical activity level.
- Step 2: View BMR and daily caloric needs for weight maintenance, loss, or gain.
Formula & Calculation Method
Men: BMR = 10w + 6.25h - 5a + 5 | Women: BMR = 10w + 6.25h - 5a - 161 | TDEE = BMR × Activity
Where the variables represent:
| Variable | Description & Units |
|---|---|
| w | Weight in kg |
| h | Height in cm |
| a | Age in years |
| Activity | undefined |
Worked Calculation Example
Scenario:
Male, age 30, weight 75 kg, height 178 cm, moderately active (1.55).
- BMR = (10×75) + (6.25×178) - (5×30) + 5 = 1,710 kcal
- TDEE = 1,710 × 1.55 = 2,650 kcal
Result: Maintenance calories equal 2,650 kcal per day.
Frequently Asked Questions
What is the Mifflin-St Jeor equation?
It is widely considered the most accurate published formula for estimating BMR in clinical and fitness settings.
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Accuracy & General Guidance Disclaimer: This calculation tool is provided for educational and practical planning purposes. Formulas are verified against standard mathematical models. Do not rely on estimates as certified professional, financial, legal, or medical advice.