ToolAtlasEstimate basal metabolic rate and a TDEE-like total from age, size, sex, and an activity factor. It is a formula, not a metabolism test, and not advice to eat a specific deficit.
You want a maintenance calorie guess. Every TDEE site uses a BMR equation plus a multiplier. Ours is the same class of math, in this tab, without a meal plan.
Not BMI. Not body fat. Not advice.
How to read the number
Activity dropdowns are crude. “Lightly active” is where people lie to the form. Treat the output as a starting range, then adjust with a professional if it matters.
CDC and dietary guidelines talk about patterns, not a ToolAtlas target.
Honest limits
- Not indirect calorimetry.
- Not a 4-week shred.
- Illness, pregnancy, and eating-disorder history need a clinician, not a widget.
This is arithmetic, not care.