Mileage Calculator & Fuel Log

Mileage Calculator & Fuel Log records your fuel fill-ups and works out how far your vehicle travels on the fuel you put in. Enter the odometer reading you started with, the reading you finished with and the amount of fuel filled, and the app calculates the result in kilometres per litre or miles per gallon.

Everything is stored on your device. The app does not request the internet permission and contains no networking library, so it works with no connection and no account.

KEY FEATURES

Mileage calculation
- Enter a start and end odometer reading plus the fuel filled, and see the figure update as you type
- Enter a trip distance instead of two odometer readings if you prefer
- Results in km/L or MPG, switchable at any time
- The start odometer is pre-filled from where the selected vehicle finished its last fill-up
- Mark a fill-up as partial to keep it out of efficiency averages while still counting its cost

Garage for multiple vehicles
- Store make, model, year, registration, fuel type, tank capacity, claimed mileage, odometer and notes
- Petrol, diesel, LPG, CNG, hybrid and electric fuel types
- Switch the vehicle you are logging against from the entry screen
- Archive a vehicle to hide it from the pickers while keeping its history

History
- Search fill-ups by note, vehicle or date
- Filter by 30 days, 90 days, one year or all time, and by vehicle
- Open any fill-up to see the arithmetic behind its figure, or edit and delete it

Analytics
- Week, month and year periods
- Mileage trend and distance charts you can tap or drag to inspect a point
- Trip quality donut chart, and a lifetime distance-weighted average with best and worst fill-ups
- Estimated CO2 based on the fuel type and the fuel you logged
- Cost per distance, total spend and average fuel price when you record prices
- Average days between fill-ups, your most common fill-up day, and a list of readings more than two standard deviations from your average

Costs
- Record the price per litre or gallon, and see the total for that fill-up and the cost per kilometre or mile

Your data
- Export to a JSON file or a CSV file for a spreadsheet
- Restore from a JSON backup you exported earlier
- Delete all local data from Settings

Other
- Optional weekly reminder to log a fill-up
- Light, dark or system theme
- Set a mileage goal and see how each fill-up compares to it and to your vehicle's claimed figure

BENEFITS

Knowing your measured fuel efficiency lets you compare it with your vehicle's claimed figure, notice when it changes, and see what fuel costs you per kilometre or mile. The history stays on the device, with or without a connection.

WHO IT IS FOR

Drivers who want their own record of fuel fill-ups and efficiency, for one vehicle or several, in metric or imperial units.

PERMISSIONS

Notifications: used only if you turn on the weekly fill-up reminder. You are asked for it at the point you enable it, and the feature is off until you do.
Vibration: used for short haptic feedback when you save or delete something.
Run at start-up: used to restore your reminder schedule after the device restarts, because Android clears scheduled alarms on reboot.

SUMMARY

An offline fuel log and mileage calculator. It takes odometer readings and fuel amounts, calculates efficiency in km/L or MPG, keeps a searchable history per vehicle, and reports trends and costs. No ads, no in-app purchases, no subscriptions.

DISCLAIMER

Figures are calculated from the readings you enter, so they depend on those readings. Fuel efficiency measured tank to tank varies with driving conditions, load, tyre pressure and how completely the tank is filled, so one fill-up may differ from your longer-term average. The CO2 value is an estimate from the fuel volume you recorded and a standard emissions factor, covering tailpipe emissions only. The claimed mileage shown for a vehicle is the value you entered. This app is not affiliated with any vehicle manufacturer.

Recent changes:
• Calculate mileage in km/L or MPG from odometer readings and fuel filled, and keep a garage of vehicles.
• Analytics by week, month or year with mileage trend, monthly spend, cost per distance and CO2 estimates.