TDEE Score Calculator — Know Exactly How Much You Burn
Your Total Daily Energy Expenditure is the single most important number in weight management. Enter your stats and activity level to get your precise TDEE, a full calorie breakdown, and a personalised HealthIQ Score out of 100.
🔥 Now turn your TDEE into a fat loss plan
Your TDEE is the foundation. The Calorie Deficit Calculator builds the exact plan on top of it.
What Is TDEE and Why Does It Matter?
TDEE — Total Daily Energy Expenditure — is the total number of calories your body burns in a full 24-hour period. It accounts for everything: the calories your organs burn just to keep you alive, the energy your muscles use during movement, the calories spent digesting food, and the output of any deliberate exercise.
TDEE is the single most important number in weight management because it defines your maintenance level. Eat exactly at your TDEE and your weight stays stable. Eat below it and you lose weight. Eat above it and you gain. Every diet approach — keto, intermittent fasting, calorie counting, low carb — works through the same mechanism: creating a deficit against your TDEE. Understanding your number puts you in control.
🔑 The key insight: Two people of the same height and weight can have TDEEs that differ by 500–800 calories per day based purely on activity level. This is why “eat 2,000 calories to lose weight” is meaningless advice — the right number is entirely personal.
The Four Components of TDEE
Your TDEE is made up of four distinct components. Understanding what each contributes helps you make smarter decisions about how to adjust it.
Basal Metabolic Rate (BMR)
BMR is the largest component — typically 60–75% of TDEE. It is the number of calories your body burns at complete rest: breathing, circulating blood, regulating temperature, running organs. You cannot directly change your BMR through lifestyle choices in the short term, but it responds to body composition over time — more muscle mass means a higher BMR.
Thermic Effect of Activity (TEA)
This is the calories burned through deliberate exercise — gym sessions, running, swimming, sport. For most people who exercise 3–5 days per week, this contributes 15–30% of total TDEE. It is the most variable component and the one most people think of when they think about “burning calories.”
Non-Exercise Activity Thermogenesis (NEAT)
NEAT is everything that is not deliberate exercise — walking to the car, fidgeting, standing, doing household tasks. Research consistently shows NEAT is a surprisingly large calorie burn — often 200–500 calories per day — and it is the component that drops most dramatically when people go on low-calorie diets (the body subconsciously moves less). Increasing NEAT through daily habits — standing desk, taking the stairs, walking during calls — is one of the most sustainable ways to raise your TDEE.
Thermic Effect of Food (TEF)
Your body burns calories digesting and processing the food you eat. Protein has the highest TEF at 20–30% of its calories, meaning 100 calories of protein actually costs 20–30 calories to digest. Carbohydrates are 5–10% and fat is 0–3%. This is why high-protein diets have a small but real metabolic advantage beyond just satiety.
Activity Multipliers Explained
Your TDEE is calculated by multiplying your BMR by an activity factor. Choosing the right multiplier is the most important decision in this calculation.
| Activity Level | Multiplier | What It Means | Common Profile |
|---|---|---|---|
| Sedentary | 1.2 | Little to no exercise | Office worker, minimal movement |
| Lightly Active | 1.375 | Light exercise 1–3 days/week | Casual walker, weekend gym |
| Moderately Active | 1.55 | Exercise 3–5 days/week | Regular gym-goer, active job |
| Very Active | 1.725 | Hard exercise 6–7 days/week | Athlete, daily training |
| Extremely Active | 1.9 | Physical job + hard daily training | Construction + sport, military |
The most common mistake is overestimating activity level. Most people who exercise 3–4 times per week live sedentary lives outside those sessions — sitting at a desk for 8 hours, commuting, watching screens. The Moderately Active multiplier (1.55) is the right choice for most gym-going adults. Starting with a lower multiplier and adjusting based on real results is always safer than overestimating.
How to Use Your TDEE for Your Goal
Fat Loss
Subtract 300–500 calories from your TDEE to create a sustainable deficit. A 500-calorie daily deficit produces approximately 0.5 kg of fat loss per week. Do not go below 1,200 kcal (women) or 1,500 kcal (men) regardless of your TDEE. Use our Calorie Deficit Calculator to set your exact target.
Maintenance and Body Recomposition
Eat at your TDEE and combine it with progressive resistance training. Over time, muscle mass increases while fat decreases — the scale may not move much but body composition improves meaningfully. This approach is particularly effective for people who are at or near a healthy weight but want to change how their body looks and performs.
Muscle Gain
Add 200–300 calories above your TDEE. This modest surplus provides the energy needed for muscle protein synthesis without excessive fat gain. Larger surpluses (“dirty bulking”) do not produce proportionally more muscle — they just produce more fat. Combined with sufficient protein (1.6–2.2 g/kg bodyweight) and progressive overload in training, a 200–300 kcal surplus is the optimal lean muscle gain approach.
Why Your TDEE Changes Over Time
TDEE is not a fixed number. It changes as your body changes. Losing weight reduces your BMR because you have less mass to maintain. Gaining muscle increases it. Ageing gradually reduces it — BMR declines roughly 1–2% per decade after 30. Prolonged calorie restriction can also lower TDEE through metabolic adaptation, which is why recalculating every 4–6 weeks during a diet is essential.
The practical implication: if you have been dieting for 8–12 weeks and weight loss has stalled, your first step is recalculating your TDEE at your new body weight — not eating even less. Often the stall is simply that your maintenance calories have dropped to meet your intake level.