The five standard levels
TDEE calculators multiply your BMR by an activity factor that bundles daily movement, exercise and digestion into one number. The standard scale: 1.2 sedentary (desk job, little exercise) · 1.375 lightly active (1–3 light sessions/week) · 1.55 moderately active (3–5 sessions/week) · 1.725 very active (hard daily training) · 1.9 extremely active (physical job plus training, or two-a-days).
The spread is enormous: on a 1,500 kcal BMR, the gap between sedentary and very active is nearly 800 kcal/day — which is why this single dropdown causes more calculator error than any formula choice.
Why almost everyone picks too high
The descriptions reference exercise sessions, but the multiplier really encodes total daily movement — and a desk worker who trains hard for an hour still spends 23 hours mostly still. Three gym sessions a week atop a sedentary job is honestly 1.375–1.45, not 1.55.
Self-report studies consistently find people overestimate their activity; picking one level too high inflates TDEE by 250–350 kcal and silently erases a planned deficit.
Two ways to get it right
Anchor to steps: under 5,000 steps/day with little exercise is 1.2; 7,500–10,000 plus a few workouts is ~1.5; consistently above 12,000 with serious training justifies 1.7+.
Or skip the guess entirely: pick a conservative level, eat the resulting target for three weeks, and let the scale trend tell you your real multiplier. Weight stable means you found TDEE; adjust 100–200 kcal otherwise.
Put it into practice: run your own numbers with the related calculator — free, instant, and nothing leaves your browser.
Frequently asked questions
I work out 5 days a week — am I 'very active'?
Only if the rest of your day also involves real movement. Five one-hour sessions atop a desk job is typically 1.5–1.55, not 1.725.
Should I use a lower multiplier and add exercise calories separately?
That's a valid alternative ('sedentary + log workouts'), popular with tracker users. Just never do both — that double-counts exercise.
What multiplier for a physical job?
Construction, nursing, farm work and similar justify 1.7–1.9 even without gym training — eight hours on your feet outweighs one hour in the gym.
More guides
- What Is TDEE?
- What Is BMR?
- Mifflin-St Jeor Calculator
- Harris-Benedict Calculator
- Katch-McArdle Calculator
- BMR vs TDEE: What's the Difference?
- What Are MET Values?
- What Is NEAT?
- The Thermic Effect of Food
- What Is a Calorie?
- Metabolic Adaptation Explained
- The Calorie Deficit, Explained
- 500-Calorie Deficit
- 1,000-Calorie Deficit
- 300-Calorie Deficit
- How Many Calories to Lose 1 Pound a Week
- How Many Calories to Lose 2 Pounds a Week
- Reverse Dieting
- Maintenance Phase
- Calorie Cycling
- How Accurate Are TDEE Calculators?
- Not Losing Weight in a Calorie Deficit? 7 Real Reasons
- Is 1,200 Calories a Day Safe?
- Should You Eat Back Exercise Calories?
- How Long Does Metabolic Adaptation Last?
- Do You Burn Fewer Calories as You Lose Weight?
- Why Your Maintenance Calories Keep Changing
- Calorie Cycling vs Flat Deficit
- How to Avoid Muscle Loss on GLP-1 Medications
Sources
- World Health Organization. WHO guidelines on physical activity and sedentary behaviour. 2020. [link]
- Ainsworth BE, Haskell WL, Herrmann SD, et al. 2011 Compendium of Physical Activities: a second update of codes and MET values. Med Sci Sports Exerc. 2011. [link]
- Lichtman SW, Pisarska K, Berman ER, et al. Discrepancy between self-reported and actual caloric intake and exercise in obese subjects. N Engl J Med. 1992. [link]