WARSONFIT · Information
Methodology
How WARSONFIT estimates calories and macros
Current rule version: energy-macros-2.1.0
WARSONFIT provides an educational calculation that visitors can explore without creating an account. The estimates are generated in the visitor's browser, using the documented version of the calculator's rules.
Resting energy expenditure. The calculator uses the Mifflin–St Jeor equation with age, height, weight, and the sex coefficient selected for the equation. This provides an estimate of resting energy expenditure, not a direct measurement or a dietary target.
Total daily energy expenditure. A conservative 16-cell activity matrix combines everyday activity outside planned exercise with an estimated weekly training-load category. Workout days and typical session duration are mapped to that category using a documented product heuristic. Training type is considered for the protein context rather than adding a second exercise calorie allowance. The total daily estimate includes a practical allowance for digestion; another digestion percentage is not added afterward.
Goals and calories. Visitors can explore fat-loss, maintenance, muscle-gain, or customized calorie scenarios. The applicable adjustment is made to estimated total daily expenditure, subject to guardrails and scenario-specific limits. These numbers are starting points, not guarantees of weight change.
Macronutrients. Protein and fat calculations use grams per kilogram of a reference weight: the lower of actual body weight and the weight corresponding to BMI 30 at the visitor's entered height. This is a calculation convention, not an ideal-weight diagnosis or body-fat measurement. Carbohydrates receive the energy remaining after protein and fat, with deterministic rounding and feasibility checks.
Training and protein. Strength training includes appropriately challenging resistance-based calisthenics. The default protein factor responds to the strength-training context and chosen goal; cardio is not automatically treated as resistance training. For example, under the fat-loss goal, the standard starting factors are 1.6, 1.8, or 2.0 g/kg of reference weight/day for unknown/no reported strength, 1–2 strength sessions, or 3+ strength sessions, respectively. Additional manually adjustable factors are available within the calculator's defined limits.
Limitations and responsible use. Neither an equation nor self-reported activity inputs can precisely measure every individual's energy needs. BMI does not reveal body-fat percentage, and individuals with unusual body composition or medical considerations may need an individual assessment. Some ages or target combinations are limited. The calculator is not a medical or dietetic consultation, and no claim is made that its numerical heuristic has been individually clinically validated.
For questions about the methodology or to report a potential error, write to support@warsonfit.com. Scientific evidence and calculator assumptions may be reviewed and updated in future versions; new findings do not automatically change the current rules without assessment and testing.