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Research

Things we worked out ourselves.

The guides explain what is already established. This is for questions nobody had published a clear answer to, so we calculated one. Every figure is derived from a cited equation and the method is stated in full, so you can reproduce it rather than take our word for it.

Original analysis

How much do calorie calculators actually disagree?

We ran one profile through every widely used BMR equation and every standard activity multiplier. The equation you pick moves the answer by 170 kcal. The activity level moves it by 1,147.