📌 Overview

Estimate your daily calorie needs (TDEE) and basal metabolic rate (BMR) using the Mifflin-St Jeor equation, based on age, sex, height, weight and activity.

🍎 Calorie Calculator

Estimate your daily calorie needs (TDEE) and basal metabolic rate (BMR) using the Mifflin-St Jeor equation, based on age, sex, height, weight and activity.

Sex

Age

Height (cm)

Weight (kg)

Activity Level

Enter your details to estimate calorie needs.

🔒 All processing happens in your browser. No data is uploaded to any server.

📋 How to Use

Select your sex and enter age, height and weight.
Choose your typical activity level.
See your BMR and daily maintenance calories (TDEE).
Use the loss/gain targets to plan your diet.

❓ FAQ

What is TDEE?

Total Daily Energy Expenditure is the number of calories you burn per day including activity. Eating at TDEE maintains weight.

How do I lose weight?

A deficit of about 500 calories per day typically leads to roughly 0.45 kg (1 lb) of loss per week. Never go below your BMR without medical advice.

How accurate is this?

The Mifflin-St Jeor equation is one of the most accurate estimates, but individual metabolism varies. Use it as a starting point.

💡 Use Cases

🥗

Weight Loss

Find your calorie deficit target.

💪

Muscle Gain

Calculate a surplus for lean bulking.

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Maintenance

Know exactly how much to eat to stay steady.

🔗 Related Tools

📖 Deep Dive: Calorie Calculator

Estimate your daily calorie needs (TDEE) and basal metabolic rate (BMR) using the Mifflin-St Jeor equation, based on age, sex, height, weight and activity.

Calorie Calculator is a free tool that runs 100% in your browser. No signup, no uploads — your data stays private. Perfect for everyday text and data tasks, saving you time and reducing mistakes.