Calorie Intake Calculator
Estimate your 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 Intake Calculator
- Enter your details: Fill in your gender, age (1–120 years), height in cm (50–250), and weight in kg (20–400). All fields are required.
- Select your activity level: Choose the option that best matches your weekly exercise routine (from sedentary to extra active).
- Calculate: Click the “Calculate Calories” button. The form validates your inputs automatically.
- Read your results: Your Total Daily Energy Expenditure (TDEE) appears in kcal/day, along with a breakdown showing the BMR formula and the activity multiplier used.
- Note: This calculator uses the Mifflin-St Jeor equation and requires metric units (cm, kg). If you see an error, double-check that all values are within the allowed ranges.
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Frequently Asked Questions
It is a formula used to estimate basal metabolic rate (BMR), which is then multiplied by an activity factor to determine total daily energy expenditure (TDEE).
It provides a good estimate, but individual variations can affect actual calorie needs. Consult a dietitian for personalized advice.
Choose based on your typical weekly exercise. Sedentary means little exercise; extra active means very hard exercise or a physically demanding job.
