No. All calculations are processed locally in your browser. No data is stored or shared.

TDEE Calculator

Estimate your Total Daily Energy Expenditure using scientifically validated BMR formulas.

🔒 Privacy by Design — No personal data is stored or shared

BMR —

TDEE —

Maintenance Calories —

Estimated daily calorie requirement

Understanding TDEE & BMR Formulas

TDEE (Total Daily Energy Expenditure) is estimated by multiplying BMR (Basal Metabolic Rate) with an activity factor. This calculator uses commonly used evidence-based BMR equations.

1. Mifflin-St Jeor Formula

Developed by: Mifflin & St Jeor (1990)

Usage: Commonly considered one of the most accurate equations for estimating resting energy expenditure in the general population.

Male:
BMR = (10 × weight kg) + (6.25 × height cm) − (5 × age) + 5

Female:
BMR = (10 × weight kg) + (6.25 × height cm) − (5 × age) − 161

2. Harris-Benedict Formula (Revised)

Developed by: Harris & Benedict (1919), revised by Roza & Shizgal (1984)

Usage: One of the earliest BMR equations and still widely used in nutrition science and clinical settings.

Male:
BMR = 88.362 + (13.397 × weight kg) + (4.799 × height cm) − (5.677 × age)

Female:
BMR = 447.593 + (9.247 × weight kg) + (3.098 × height cm) − (4.330 × age)

3. Katch-McArdle Formula

Developed by: Katch & McArdle

Usage: This formula uses lean body mass and can provide a more accurate estimate for individuals with known body fat percentage.

LBM = weight kg × (1 − body fat % / 100)
BMR = 370 + (21.6 × LBM)

Important:
These formulas provide scientific estimates of energy expenditure. Actual calorie needs may vary depending on metabolism, activity, body composition, and health conditions.

Frequently Asked Questions

What is TDEE?

TDEE (Total Daily Energy Expenditure) is the total number of calories your body burns in a day including activity.

How accurate is this calculator?

It uses scientifically validated BMR formulas such as Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle for estimation.

Is my data stored or shared?

No. This is a privacy-first calculator. All inputs are processed locally in your browser only.

Which formula should I choose?

Mifflin-St Jeor is best for general use, Harris-Benedict is traditional, and Katch-McArdle is best if you know your body fat percentage.