fitnessMarch 4, 2026

How to Calculate Your TDEE

Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns in a day. It is the foundation of any effective diet plan — whether your goal is to lose weight, gain muscle, or maintain your current physique. Understanding your TDEE takes the guesswork out of nutrition and gives you a precise starting point for your calorie targets.

What is TDEE?

TDEE stands for Total Daily Energy Expenditure — the total calories your body burns in 24 hours. It consists of four components: Basal Metabolic Rate (BMR, 60-70% of TDEE) — calories burned at complete rest; Thermic Effect of Food (TEF, 10%) — energy used to digest food; Non-Exercise Activity Thermogenesis (NEAT, 15-30%) — calories from daily movement like walking and fidgeting; and Exercise Activity Thermogenesis (EAT, 5-10%) — calories from intentional exercise.

How to Calculate Your BMR

The Mifflin-St Jeor equation is the most accurate for most people. For men: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) + 5. For women: BMR = (10 × weight in kg) + (6.25 × height in cm) - (5 × age) - 161. Example: a 30-year-old woman, 165 cm, 65 kg has a BMR of about 1,394 calories. Other formulas include Harris-Benedict and Katch-McArdle (which uses lean body mass).

Activity Multipliers

Multiply your BMR by an activity factor to get your TDEE: Sedentary (office job, little exercise): BMR × 1.2. Lightly active (light exercise 1-3 days/week): BMR × 1.375. Moderately active (moderate exercise 3-5 days/week): BMR × 1.55. Very active (hard exercise 6-7 days/week): BMR × 1.725. Extremely active (physical job + intense training): BMR × 1.9. Most people overestimate their activity level — when in doubt, choose the lower multiplier.

Using TDEE for Weight Loss

To lose weight, eat below your TDEE to create a calorie deficit. A deficit of 500 calories per day equals roughly 0.5 kg (1 lb) of fat loss per week. Never go below your BMR (typically 1,200-1,500 for women, 1,500-1,800 for men). Start with a moderate 15-20% deficit from TDEE. As you lose weight, your TDEE decreases — recalculate every 5-10 kg lost. A slower deficit (300-500 cal) preserves more muscle and is more sustainable.

Using TDEE for Muscle Gain

To build muscle, eat above your TDEE (caloric surplus). A surplus of 200-500 calories per day supports muscle growth while minimizing fat gain. This is called a lean bulk. Ensure adequate protein (1.6-2.2 g/kg) and pair with progressive resistance training. Beginners can gain muscle in a deficit (body recomposition), but experienced lifters typically need a surplus. Track weight weekly — aim for 0.25-0.5 kg gain per week.

Common TDEE Mistakes to Avoid

Overestimating activity level is the most common mistake. Do not count steps or daily movement twice (in both NEAT and exercise). Online calculators give estimates — track your actual intake and weight for 2 weeks to find your true TDEE. Do not drastically cut calories below your BMR. Recalculate TDEE as your weight changes. Account for weekend eating (many people eat maintenance during the week but surplus on weekends). Be honest about exercise frequency and intensity.

Calculate Your TDEE Now

Use our free TDEE Calculator to find your Total Daily Energy Expenditure based on your stats, activity level, and goals.

Try TDEE Calculator

Frequently Asked Questions

How accurate are TDEE calculators?

TDEE calculators provide estimates within 10-15% accuracy for most people. They are a starting point, not exact figures. To find your true TDEE, eat at the calculated level for 2-3 weeks while tracking your weight. If your weight is stable, that is your maintenance TDEE. If you are losing or gaining, adjust by 100-200 calories. Individual metabolism, genetics, and NEAT levels cause variation between people of similar stats.

Why is my TDEE different from my friend with the same weight?

TDEE varies based on many factors beyond weight: height, age, sex, muscle mass, genetics, NEAT (some people naturally fidget and move more), thyroid function, and sleep quality. Two people with the same weight can have TDEE differences of 300-500 calories. Body composition is a major factor — someone with more muscle mass will have a higher BMR and therefore higher TDEE.

Should I eat back calories burned during exercise?

If you calculated your TDEE with an activity multiplier, exercise calories are already included — do not eat them back. If you calculated based on sedentary TDEE and add exercise separately, eat back about 50-75% of exercise calories (trackers overestimate by 20-50%). For weight loss, a simpler approach is to use your TDEE with activity multiplier and create a deficit from that number.