Calorie Calculator
Estimate daily calorie needs based on age, gender, weight, height, and activity level using the Mifflin-St Jeor equation.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to use the Calorie Calculator
- Enter your age (1–120 years).
- Select your gender (Male or Female).
- Enter your weight in kilograms (1–500 kg).
- Enter your height in centimeters (1–300 cm).
- Choose your activity level from the dropdown (sedentary to extra active).
- Click "Calculate Calories" to see your results.
What you get:
- Total Daily Energy Expenditure (TDEE) in kcal/day — the calories you need to maintain your current weight.
- A breakdown showing your Basal Metabolic Rate (BMR) and the activity multiplier used.
Note: All inputs must be in metric units (kg and cm). The calculator uses the Mifflin-St Jeor equation.
Previous Results
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Frequently Asked Questions
It's a formula used to estimate Basal Metabolic Rate (BMR), which is the number of calories your body needs at rest. It is considered one of the most accurate equations.
Your BMR is multiplied by an activity factor (from 1.2 for sedentary to 1.9 for extra active) to estimate total daily energy expenditure (TDEE).
Yes, it provides a starting point for calorie intake. To lose weight, you would typically consume fewer calories than your TDEE.
