What this site is
FuelCount publishes browser-based calculators for maintenance calories (TDEE), calorie deficits, macronutrient splits, protein targets, walking and running energy cost, step conversions, an ideal-weight reference range, Navy and Army tape estimates of body fat, plus training tools for one-rep max, running pace, VO2 max, and heart-rate zones. The project exists so someone can get a transparent number without installing an app or creating a login.
There is no public author bio or face attached to the site on purpose. The calculators stand on published equations and the explanations on each page, not on a personality.
How the math is chosen
Resting calories default to the Mifflin–St Jeor equation (1990), which is widely used for general adult estimates. You can also compare the revised Harris–Benedict equations (Roza and Shizegal, 1984) and, when you have a body-fat percentage, the Katch–McArdle lean-mass formula. Activity multipliers are the conventional 1.2 to 1.9 scale used with those equations. Walking calories use metabolic equivalent (MET) values from the Compendium of Physical Activities. The Navy body-fat tool uses the Hodgdon and Beckett circumference equations commonly described as the U.S. Navy tape method, with measurements in inches inside the formula.
Weekly weight-change plans use the familiar 3,500-calorie-per-pound rule as a planning shortcut. That rule is a rough model, not a law of physiology, and it tends to drift over longer diets. Each relevant page says so in the write-up.
What this site is not
FuelCount is not a clinic, a coaching practice, or a meal-delivery service. The outputs are educational estimates. They do not diagnose, treat, or prevent disease, and they are a poor stand-in for a registered dietitian, physician, or qualified coach who can see the rest of your context.
Do not use these tools as a substitute for care if you are pregnant, under 18, recovering from an eating disorder, or living with a condition that changes energy needs or fluid balance. If a number looks extreme, trust that feeling and slow down rather than forcing a target.
Privacy and funding
Calculator inputs never leave your device through this site’s own code. A unit preference can be stored in your browser with localStorage so US or metric stays selected. The privacy policy explains what would change if display ads or affiliate links are added later.
The site is designed to stay free to use. If advertising or affiliate recommendations are added, they will be labeled. We do not sell personal calculator inputs, because the tools are not built to collect them.
Corrections
If you find a math error or a broken explanation, email fuelcount@gmail.com or use the contact page. Formula tests live alongside the site’s source so the core equations can be checked independently of the layout.