01
What the estimate uses
The tool combines age, height, weight, an equation option, and a broad activity selection. The result is rounded and displayed as a range to reflect ordinary uncertainty.
02
What it cannot know
Body composition, medication, health conditions, recovery, environment, training volume, growth, pregnancy, lactation, and measurement error can all make real needs different from an equation.
03
Use trends carefully
If you use an estimate, treat it as a starting hypothesis and review energy, performance, hunger, recovery, and longer-term trends. Avoid aggressive restriction or frequent reactive changes.