Daily Caloric Deficit & TDEE Calculator
Accurate calculators with instant results.
What does this tool do?
Using the science-backed Mifflin-St Jeor equation, this tool computes your basal metabolic rate from age, weight, height and sex, adjusts it for your activity level to get TDEE, then shows the daily calorie targets for losing or gaining weight.
Key features
- Instant calculation
- Accurate formulas
- Clear result breakdown
- Mobile-friendly inputs
Using the science-backed Mifflin-St Jeor equation, this tool computes your basal metabolic rate from age, weight, height and sex, adjusts it for your activity level to get TDEE, then shows the daily calorie targets for losing or gaining weight.
Daily Caloric Deficit & TDEE Calculator
Know your numbers — BMR, TDEE and the right calorie target for your goal.
How to Use
- Select your sex and enter age, weight and height.
- Choose the activity level closest to your lifestyle.
- Read your TDEE and the calorie targets for weight loss or gain.
Core Features
- 100% client-side: every calculation happens in your browser, nothing is uploaded or stored on any server.
- Free forever: no accounts, no paywalls, no usage limits.
- Instant results: values update live as you type, with zero waiting.
- Private by design: your numbers never leave your device.
Frequently Asked Questions
What is TDEE?
Total Daily Energy Expenditure — the total calories your body burns per day including basic metabolism plus all activity. Eating at TDEE maintains weight; below it you lose; above it you gain.
How accurate is the Mifflin-St Jeor formula?
It is the most validated practical BMR formula, usually within 10% for most adults. Individual metabolism, muscle mass and medical conditions can shift real numbers.
How to Use Daily Caloric Deficit & TDEE Calculator
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