Calorie Calculator
The Calorie Calculator estimates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor equation, one of the most accurate published formulas.
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How This Tool Works
Enter your sex, age, height, weight, and typical activity level to calculate your maintenance calories, plus common weight loss and gain targets.
Formula & Method
BMR (Mifflin-St Jeor): men = 10×weight(kg) + 6.25×height(cm) − 5×age + 5; women = 10×weight(kg) + 6.25×height(cm) − 5×age − 161. TDEE = BMR × activity multiplier.
Example Calculation
A moderately active 30-year-old woman, 5'5", 145 lb, has a BMR of about 1,411 and a maintenance calorie level (TDEE) of about 2,187 calories/day.
Frequently Asked Questions
What is TDEE?+
Total Daily Energy Expenditure (TDEE) is your estimated maintenance calorie level — how many calories you burn per day including activity, used as a baseline for weight goals.
How many calories should I eat to lose weight?+
A common approach is a 10–20% deficit below your TDEE, which typically produces gradual, sustainable weight loss without being overly restrictive.
Is this equation accurate for everyone?+
The Mifflin-St Jeor equation is considered one of the more accurate formulas for the general population, but individual metabolism varies — use this as a starting point, not a guarantee.
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