Web app · Utilities
Fuelbook
What your bike, scooter or car really costs per kilometre
Log odometer, litres and amount paid and Fuelbook works out km/l and cost per km for every vehicle you own, charts the efficiency trend and monthly running cost, and reminds you about oil changes by date or by distance. Free, metric, no account.
Stored in your browser only. Nothing you do in the web version is sent to our servers. Clear your browser data and it's gone — so export a backup from the in-app menu if you want to keep it.
In your browser
What you can do in Fuelbook on the web
km/l and cost/km, worked out for you
Every fill-up is measured against the one before it: distance since, litres in, mileage and cost per kilometre — the same maths as the iPhone app, with a live preview while you type.
Metric and two-wheeler first
Litres, kilometres, km/l and cost/km throughout, with bikes, scooters, cars and trucks/SUVs and a currency symbol you choose — no gallons, no mpg.
Every vehicle in its own logbook
Each bike, scooter or car keeps its own fill-ups, services, average km/l, cost per km, total distance, litres fuelled and money spent.
Efficiency trend and monthly spend
Insights charts km/l per fill-up against your best and worst, cost per km over time, and eight months of fuel spend so a vehicle that starts drinking more is obvious.
Service log with date or distance reminders
All eight service types — oil change, tyre pressure, tyres, chain, brakes, air filter, spark plug, general — with the usual interval one tap away, and due-soon at 30 days or 500 km.
Yours, offline, exportable
Everything stays in this browser; export the whole logbook as JSON or your fill-ups with km/l and cost/km as a CSV.
Screens
Every screen, rebuilt for the browser
-
1
Vehicles
Fuel spent in the last 30 days, service alerts, and a card per vehicle showing average km/l, cost per km and total spent.
-
2
Vehicle
One vehicle's six headline numbers, its efficiency trend line, the recent fill-up log and its service log.
-
3
Insights
Best, worst and average km/l with switchable charts for mileage, cost per km and monthly fuel spend.
-
4
Fill-up log
Every fill-up for one vehicle grouped by month with that month's spend, each row showing odometer, litres, amount and km/l.
-
5
Service log
Overdue and due-soon services across all your vehicles, then the full history per vehicle.
-
6
Log a fill-up
Odometer, litres, amount paid, date, station note and fuel type, with the km/l and cost per km previewed live before you save.
-
7
Log a service
Service type, date, odometer, cost and notes, plus reminders by date, by odometer, or prefilled from the usual interval.
-
8
Add or edit a vehicle
Name, vehicle type, fuel type, make, model and year.
-
9
Settings
Currency symbol, the due-soon thresholds, CSV and JSON export, sample data and erase.
Try it with sample data: Loads three vehicles — a Honda Activa scooter, a Maruti Swift and a Royal Enfield Classic 350 — with 29 fill-ups going back a year and 15 services, some already overdue. You can start fresh at any time.
Ready? It's free.
Sign in once and every All Things AI web app opens instantly. No install, no subscription, no data leaving your browser.
Your say
Is Fuelbook useful? Tell us what to build next.
Sign in to vote.
Tell us what to build next.
Sign in to leave a comment or vote — it takes a few seconds.
Sign in to commentNo comments yet — be the first to say what this app should do next.
Questions
Is the web version of Fuelbook free?+
Yes. Sign in with a free All Things AI account and use every screen — no subscription, no in-app purchases.
Where is my data stored?+
Only in this browser's local storage. Nothing you enter is sent to our servers, so we can't see it, back it up, or restore it. Clearing site data, a private window, or another device starts empty. Export a backup from the in-app menu to keep it.
Do I need an account?+
You can read about the app without one, but you must sign in to open it. Sign-in is free and takes a few seconds with Google.
How is the web version different from the Fuelbook iPhone app?+
The iPhone app can notify you when a service falls due; a web page cannot, so Fuelbook shows overdue and due-soon services when you open it instead. km/l assumes you fill the tank the same way each time — a part fill makes that one reading low and the next one high, exactly as on the phone. Vehicles, fill-ups and services live in this browser only, so export the JSON backup or the CSV before clearing site data or moving to another device.