Activity Multipliers Explained: Sedentary to Very Active TDEE
October 21, 2026
Total daily energy expenditure (TDEE) is your BMR multiplied by an activity factor. The standard factors are 1.2 for sedentary, 1.375 for lightly active, 1.55 for moderately active, 1.725 for very active, and 1.9 for extra active. For a BMR of 1,755 calories, that range runs from about 2,106 to 3,335 calories a day, a gap of more than 1,200 calories from one choice.
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The categories were defined loosely, which is why people so often pick the wrong one. Think of the factor as covering both your daily movement (job, steps) and your deliberate exercise.
| Multiplier | Description | TDEE for BMR 1,755 |
|---|---|---|
| 1.2 | Sedentary: desk job, little exercise | 2,106 |
| 1.375 | Light: exercise 1 to 3 days a week | 2,413 |
| 1.55 | Moderate: exercise 3 to 5 days a week | 2,720 |
| 1.725 | Very active: hard exercise 6 to 7 days a week | 3,027 |
| 1.9 | Extra active: physical job plus training | 3,335 |
Why People Overestimate
Most people count workouts but overlook that the other 23 hours may be sedentary. A one-hour gym session burns perhaps 300 to 500 calories, which spread across the week does not raise TDEE as much as the top multipliers imply.
If your job keeps you seated, start with sedentary or lightly active even if you train hard, and add exercise calories separately if you track them. Starting too high is the most common reason a planned deficit does not produce results.
Calibrating Against Reality
The multiplier is just a starting point. Eat at your estimated TDEE for two weeks while tracking your weight. If your weight is stable, the estimate is right. If you lose a pound a week without trying, your real TDEE is about 500 calories higher than estimated, and vice versa.
Re-check every time your weight, job, or training changes.
Frequently Asked Questions
What activity multiplier should I use?
If unsure, choose the lower option. Most people with office jobs fit sedentary or lightly active even if they exercise a few times a week.
Does TDEE include exercise?
Yes. TDEE covers BMR, daily movement, exercise, and the thermic effect of food.
Why do fitness trackers and calculators disagree on calories?
They use different formulas and assumptions. Wearables often overestimate calorie burn, and calculators depend on your chosen activity level.
How often should I recalculate TDEE?
After every 5 to 10 kg of weight change, or whenever your routine changes significantly.