About Fuelwise

Fuelwise offers free calculators for calories, TDEE, BMR, macros, BMI and protein. They run in your browser and need no account.

Why it exists

The formulas are public, but easy to get wrong by hand. Each page shows the formula, a worked example and the source, so you can check the result.

Who runs it

Fuelwise is built and maintained by Luis Insuasti, a software developer. It is not a medical or nutrition service. Sources are on the methodology page.

What we can and cannot tell you

The numbers are estimates for healthy adults. They are not medical advice. Ask a doctor or registered dietitian about your own health and goals.

Contact

Found a mistake? Use the contact page.