Question 1

Is FuelKit free?

Accepted Answer

Yes. FuelKit is completely free to use. You can build a timed fuel plan for any activity — hiking, running, cycling, or racing — with no sign-up required.

Question 2

How does FuelKit calculate my nutrition?

Accepted Answer

FuelKit uses the Pandolf load-carriage equation and MET tables to estimate your calorie burn, then applies ACSM, ISSN, and AIS guidelines to derive your carbohydrate, hydration, and sodium targets. An AI coach narrates these numbers into a timed, actionable plan — but all the math is deterministic and runs in your browser.

Question 3

What activities does FuelKit support?

Accepted Answer

FuelKit supports hiking, trail running, road running, walking, road cycling, mountain biking, indoor cycling, e-biking, and Nordic skiing. Each activity uses a sport-specific metabolic model so your fuel targets are accurate.

Question 4

Do I need to create an account?

Accepted Answer

No account is needed. Your plans are saved privately in your browser's local storage and are never sent to a server.

Question 5

What is the supplement guide?

Accepted Answer

FuelKit includes an evidence-graded supplement guide covering Grade A ergogenic aids such as caffeine, beetroot nitrate, sodium bicarbonate, beta-alanine, and carbohydrates. Each supplement shows dosing, timing, mechanism, and links to the underlying research.

Question 6

Can I import my GPS file to build a plan?

Accepted Answer

Yes. You can upload a GPX or TCX file from your GPS watch and FuelKit will automatically fill in your distance, elevation gain, and duration.

Question 7

What happens after my workout?

Accepted Answer

Use the Compare feature to log what actually happened — perceived effort, actual duration, and GPS data — and FuelKit will provide AI-adjusted fueling advice for your next effort.

Question 8

Is the nutrition advice based on real science?

Accepted Answer

Yes. FuelKit's engine is built on guidelines from the American College of Sports Medicine (ACSM), the International Society of Sports Nutrition (ISSN), and the Australian Institute of Sport (AIS). No bro-science — just peer-reviewed literature.

Your free nutrition coach for any endurance effort.

Any route. Any race. Any discipline.

No bro-science. Just literature.