Free TDEE Calculator 2025

Calculate your Total Daily Energy Expenditure (TDEE) and Basal Metabolic Rate (BMR) with our scientifically accurate calculator. Get personalized calorie needs for weight loss, maintenance, or muscle gain.

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TDEE Calculator

Calculate your daily calorie needs using the Mifflin-St Jeor formula

What is TDEE (Total Daily Energy Expenditure)?

TDEE represents the total number of calories your body burns in a day, including your basal metabolic rate (BMR), physical activity, and the thermic effect of food. Understanding your TDEE is crucial for achieving your fitness goals, whether you want to lose weight, maintain your current weight, or build muscle.

How to Calculate TDEE

Our TDEE calculator uses the Mifflin-St Jeor equation, which is considered the most accurate formula for calculating BMR and TDEE. The formula takes into account your age, gender, height, weight, and activity level to provide you with personalized calorie recommendations.

TDEE Formula

BMR (Mifflin-St Jeor):

Men: (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5

Women: (10 × weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161

TDEE = BMR × Activity Multiplier

Why Choose Our TDEE Calculator?

Scientifically Accurate

Based on the Mifflin-St Jeor equation, the most accurate formula for calculating BMR and TDEE according to recent studies.

Mobile Friendly

Optimized for all devices - calculate your TDEE on desktop, tablet, or mobile phone with our responsive design.

Privacy First

Your data stays on your device. No registration required, no personal information stored, complete privacy protection.

Detailed Results

Get your BMR, TDEE, recommended calories for your goal, and macronutrient breakdown in one comprehensive calculation.

Understanding Activity Levels

Sedentary (1.2)

Little or no exercise, desk job

  • Office work with minimal movement
  • No structured exercise routine
  • Mostly sitting throughout the day

Lightly Active (1.375)

Light exercise 1-3 days/week

  • Light walking or cycling
  • Occasional sports or recreation
  • Some daily movement

Moderately Active (1.55)

Moderate exercise 3-5 days/week

  • Regular gym workouts
  • Running or swimming
  • Active lifestyle

Very Active (1.725)

Hard exercise 6-7 days/week

  • Daily intense workouts
  • Competitive sports
  • Physical labor job

Extremely Active (1.9)

Very hard exercise, physical job

  • Professional athlete
  • Construction or manual labor
  • Multiple daily workouts

Frequently Asked Questions

What's the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is the number of calories your body burns at rest to maintain basic life functions. TDEE (Total Daily Energy Expenditure) includes BMR plus calories burned through physical activity and food digestion.

How accurate is the TDEE calculator?

Our calculator uses the Mifflin-St Jeor equation, which is considered the most accurate formula with 95% accuracy. However, individual variations may occur due to factors like muscle mass, genetics, and medical conditions.

How many calories should I eat to lose weight?

To lose weight, create a calorie deficit of 500-1000 calories per day below your TDEE. This typically results in 1-2 pounds of weight loss per week. Never go below 1200 calories for women or 1500 calories for men.

How often should I recalculate my TDEE?

Recalculate your TDEE every 10-20 pounds of weight change, or if your activity level changes significantly. Regular recalculations ensure accurate calorie recommendations.

What are macronutrients?

Macronutrients are the three main nutrients your body needs: proteins (4 calories/gram), carbohydrates (4 calories/gram), and fats (9 calories/gram). Our calculator provides the optimal ratio for your goals.

Can I use this calculator for muscle gain?

Yes! For muscle gain, eat 200-500 calories above your TDEE. Focus on adequate protein intake (1.6-2.2g per kg body weight) and progressive resistance training for optimal results.