Editorial policy
Editorial Policy
Every number on FitCalc comes from a published formula, is labelled an estimate, and is checked before it goes live. No invented figures, no magic ratios, no credentials claimed.
Sources
Calculators and guides are built on published, named sources: the Mifflin-St Jeor equation (1990) for BMR and TDEE; the Compendium of Physical Activities for MET values; the Epley (1985) and Brzycki (1993) formulas for one-rep-max; the Riegel formula (1977) for race-time prediction; the 1.6–2.2 g/kg evidence range for protein; and the 220 − age and Tanaka formulas for maximum heart rate. Where sources disagree — for example, on protein needs — the guide says so and gives the range, not a single number presented as settled fact.
Estimates, always labelled
A formula result is an estimate from a population average. Every tool and every article says so, with the safety floors applied: 1,200 kcal/day for women and 1,500 kcal/day for men, never recommended below without medical supervision. We do not publish very-low-calorie targets, and we do not present a calculation as a medical recommendation.
Ranges, not magic numbers
Fitness has few exact answers. Where the evidence supports a range — protein, calorie deficits, training percentages — we publish the range and explain what moves a person within it. Where a number is exact — pace from time and distance, grams from macros at 4/4/9 kcal — we say it is exact and show the arithmetic.
No credentials claimed
FitCalc is written by people who train, not by doctors, dietitians or coaches, and the site never claims otherwise. That is why every page cites its sources and tells you to check with a professional before acting on a number. The full position is in our Disclaimer.
Corrections
If a formula, a table or a guide is wrong, we fix it. Corrections are checked against the published sources before a page changes, and corrections from readers are fixed first — write to us on the Contact page with the page, the figure you think is wrong, and a source if you have one.
Affiliates and independence
FitCalc may earn a commission from affiliate links (see the Affiliate Disclosure). Affiliate relationships never change a formula, a result or a recommendation — the maths is the maths, and no product can buy a better number.