What does TDEE stand for?

TDEE stands for Total Daily Energy Expenditure. It represents the total number of calories your body burns in a 24-hour period, including your basal metabolic rate, the thermic effect of food, non-exercise activity thermogenesis, and exercise activity thermogenesis.

How is TDEE different from calories?

TDEE is measured in calories, but it specifically refers to the calories you burn (energy output), not the calories you eat (energy input). When people say 'calories,' they usually mean dietary intake. TDEE is the other side of the equation — your total energy expenditure.

What is a good TDEE for weight loss?

There is no single 'good' TDEE for weight loss because TDEE varies by individual. To lose weight, you eat below your personal TDEE. A deficit of 500 calories per day below your TDEE typically results in about 0.5 kg (1 lb) of weight loss per week.

Does TDEE include exercise?

Yes. TDEE includes all forms of energy expenditure: your basal metabolic rate at rest, the energy used to digest food, non-exercise movements like walking and fidgeting, and structured exercise such as gym workouts or running.

How often should I recalculate my TDEE?

You should recalculate your TDEE every 4 to 6 weeks, or whenever your weight changes by more than 2–3 kg. Changes in body weight, muscle mass, age, and activity level all affect your TDEE, so periodic recalculation keeps your calorie targets accurate.

What Is TDEE?

Medically reviewed content · Updated January 2025

What is TDEE?

TDEE stands for Total Daily Energy Expenditure. It is the total number of calories your body burns in a single day. Every process in your body requires energy — from breathing and pumping blood to walking to the kitchen and exercising at the gym. TDEE captures all of it in one number.

Think of TDEE as your body's daily energy budget. If you eat more calories than your TDEE, you gain weight. If you eat fewer, you lose weight. If you eat exactly at your TDEE, your weight stays the same. This makes TDEE the single most important number for anyone trying to manage their weight.

      TDEE = BMR + TEF + NEAT + EAT

      Your total daily burn is the sum of your resting metabolism, food digestion, daily movement, and structured exercise.

The Components of TDEE

Your TDEE is made up of four distinct components, each contributing a different share of your total calorie burn.

1. Basal Metabolic Rate (BMR) — 60–70% of TDEE

BMR is the number of calories your body burns at complete rest — just to keep you alive. This includes breathing, circulating blood, regulating body temperature, and cell repair. Even if you stayed in bed all day and did absolutely nothing, your body would still burn this many calories. For most people, BMR accounts for the largest chunk of daily energy expenditure, typically between 1,200 and 2,000 calories depending on body size, age, and sex.

2. Thermic Effect of Food (TEF) — ~10% of TDEE

Digesting food itself requires energy. When you eat a 500-calorie meal, your body uses roughly 50 calories just to break it down, absorb nutrients, and process them. Protein has the highest thermic effect (20–30%), followed by carbohydrates (5–10%) and fats (0–3%). This is one reason high-protein diets are popular for weight management.

3. Non-Exercise Activity Thermogenesis (NEAT) — 15–20% of TDEE

NEAT covers all the movement you do outside of structured exercise: walking to your car, fidgeting at your desk, standing while cooking, carrying groceries, and even gesturing during conversation. NEAT varies dramatically between individuals. An office worker might burn 200 calories through NEAT, while a retail worker on their feet all day could burn 800 or more. This is often the most underestimated component of TDEE.

4. Exercise Activity Thermogenesis (EAT) — 5–10% of TDEE

EAT is the energy burned during intentional, structured exercise — gym sessions, runs, cycling, swimming, or group fitness classes. Despite what many people assume, planned exercise typically accounts for the smallest portion of your total daily calorie burn. A 45-minute strength training session burns roughly 150–250 calories, while a 30-minute jog burns around 250–350 calories.

How to Calculate Your TDEE

The most practical way to estimate TDEE is a two-step process:

Calculate your BMR using the Mifflin-St Jeor equation, which is the formula most recommended by nutrition researchers.
Multiply by an activity factor that reflects your overall daily activity level.

The standard activity multipliers are:

Sedentary (desk job, little exercise): BMR × 1.2
Lightly active (exercise 1–3 days/week): BMR × 1.375
Moderately active (exercise 3–5 days/week): BMR × 1.55
Very active (exercise 6–7 days/week): BMR × 1.725
Extremely active (physical job + training): BMR × 1.9

You don't need to do this math by hand. Use our TDEE Calculator to get your number in seconds, or check your baseline with the BMR Calculator.

Why TDEE Matters

Once you know your TDEE, you can set precise calorie targets for any goal:

Weight loss: Eat 300–500 calories below your TDEE. This creates a sustainable deficit that leads to roughly 0.3–0.5 kg of fat loss per week.
Weight maintenance: Eat at your TDEE. Your weight stays stable over time.
Muscle gain: Eat 200–400 calories above your TDEE. Combined with resistance training, the surplus supports new muscle tissue growth while minimizing excess fat gain.

Without knowing your TDEE, calorie targets are just guesswork. A 1,500-calorie diet might be perfect for a small sedentary woman, but it would be a dangerously aggressive deficit for a tall active man.

Real-World Example

Example: Calculating TDEE for Weight Loss

Profile: A 28-year-old man, 175 cm tall, weighing 78 kg, who exercises 3 times per week (moderately active).

Step 1 — Calculate BMR (Mifflin-St Jeor):
BMR = (10 × 78) + (6.25 × 175) − (5 × 28) − 5 = 780 + 1,093.75 − 140 − 5 = 1,729 cal/day

Step 2 — Apply activity multiplier:
TDEE = 1,729 × 1.55 = 2,680 cal/day

Step 3 — Set a weight loss target:
To lose 0.5 kg per week, subtract 500 calories: 2,680 − 500 = 2,180 cal/day

At 2,180 calories per day, this person would lose approximately 0.5 kg per week, or about 6 kg over 12 weeks.

Disclaimer: Not medical advice. For informational purposes only. Consult a healthcare professional before making significant changes to your diet or exercise routine.

Calculate Your TDEE