Overview
What Is a Calorie Calculator?
This tool estimates your daily calorie needs using the Mifflin-St Jeor equation, factoring in your age, sex, weight, height, and activity level.
Estimate your daily calorie needs based on activity level.
This tool estimates your daily calorie needs using the Mifflin-St Jeor equation, factoring in your age, sex, weight, height, and activity level.
Useful for understanding maintenance calories, or as a starting point for weight loss or gain goals.
Input age, sex, height, and weight.
Choose the option that best matches your typical activity.
The result updates automatically.
Using the Mifflin-St Jeor equation, a widely-used formula for estimating basal metabolic rate, then adjusted by activity level.
No, it's a reasonable estimate - individual metabolism varies, and actual needs may differ.
A common approach is eating roughly 500 calories below maintenance for gradual weight loss, though consult a professional for personalized advice.
Not directly - the Mifflin-St Jeor equation uses weight, height, age, and sex, not body composition.
Little to no regular exercise, primarily desk-based daily activity.
It provides a starting estimate, though very active athletes may need more precise, personalized calculation.
This calculator is designed for adults - children have different metabolic needs.
No, this is an estimation tool for informational purposes - consult a healthcare provider for personalized nutrition guidance.
No, calculations happen entirely in your browser.
Yes, completely free with no sign-up required.