Gas/Oil: Fuel Mix Calculator
Gas/Petrol: Ratios, Records
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
You know your equipment. Make each mix count with fuel ratios, batch records, labels and 41-unit conversions plus unlimited calculators on Apple Watch. Ready for the job.
You take pride in keeping your equipment ready for the next job. Thank you for using Gas / Oil. Calculate a two-stroke fuel mix, check an engine reference and keep track of the cans on your shelf, with useful tools for iPhone, iPad and Apple Watch.
MIX FUEL WITH CLEAR UNITS
- Calculate oil from the fuel quantity and ratio you choose.
- Use US gallons, Imperial gallons, liters and milliliters.
- Check a ratio from fuel and oil consumption or tank readings.
- Convert between oil percentage and fuel-to-oil ratio.
- Work backward from available mixing oil to fuel quantity.
- Calculate additive doses from the product instructions you enter.
- Review estimated finished volume, including oil and recorded additives.
FIND YOUR ENGINE AND CHAIN
- Browse 27 small two-stroke engine profiles, including 10 scooter profiles.
- Find models from STIHL, Husqvarna, ECHO, Yamaha, Honda and more.
- Check Piaggio, Vespa, Genuine, Peugeot and KYMCO scooter references.
- Distinguish premix engines from models with a separate oil tank.
- Read model, year and oil requirements with manufacturer source links.
- Search by brand, model or engine code; filter and group the results.
- Explore 45 chainsaw chain profiles with model-specific filing guidance.
- Measure pitch across three consecutive rivet centers.
- Compare drive-link thickness and convert inch fractions to millimeters.
- Find chain references by code, pitch, manufacturer or file size.
KEEP YOUR MACHINES AND CANS ORGANIZED
- Save equipment names, photos, notes and preferred units.
- Save the ratio you confirm from each machine's instructions.
- Start a mix calculation from a saved machine.
- Name containers and enter their permitted fill limits.
- Log mixing dates, ratios, oil, additives and intended equipment.
- See days since mixing and choose your own fuel review date.
- Enable an optional device alert for that date.
- Mark fuel used up or a can emptied, and keep its history.
- Start a fresh draft with Mix again.
- Preview, save, share or print fuel labels as PDF or PNG.
FIND AND UPDATE SAVED RECORDS
- Keep calculations with their inputs, results, names and notes.
- Save drafts now and finish their details later.
- Edit saved records and see related views update.
- Search and filter records or history by type, status and date.
- Follow a machine or container into its batch history.
- Browse more records as they load automatically.
- Export entity spreadsheets as CSV and transfer saved data as JSON.
- See overall totals and counts for each saved record type.
TOOLS THAT FIT YOUR ROUTINE
- Convert 41 units across six categories in one view.
- Calculate MPG, L/100 km, fuel consumption, range and area.
- Open Help beside forms for instructions, units and formulas.
- Reset calculations without deleting saved history.
- Reload the latest saved values with Reset in record editors.
- See one save confirmation at a time, including over open forms.
- Choose Light, Dark or Follow System and your result precision.
- Use iPad sidebars, favorites and a keyboard Done button.
- Keep check-ins and milestones inside the app.
TAKE THE CALCULATORS TO APPLE WATCH
- Use all 16 tools without a nearby iPhone or a Pro purchase.
- Save locally, share a result or reset the current calculation.
- Find Help & formulas at the bottom of Watch home.
Start with 50 free calculations on iPhone and iPad. Choose monthly or lifetime Pro for unlimited calculations, record management and fuel workflows. Watch calculator use is unlimited. Watch records stay on the Watch.
Follow your equipment and product instructions. Review dates do not establish fuel safety or expiry. Chain pitch alone does not select a file. Transfers include up to 10,000 saved items, with a separate 100 MB JSON file limit.
For monthly subscriptions:
Monthly Pro is a 1-month auto-renewable subscription.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
You take care to get your equipment and fuel details right. Thank you for using Gas / Oil. This update adds small engine and scooter references, expands the chainsaw guide, and puts Help, Reset and save feedback closer to the work you are doing.
NEW SMALL TWO-STROKE ENGINE REFERENCES
- Browse 27 profiles covering handheld tools, scooters, outboards and selected legacy mowers and snow tools.
- Find 10 scooter profiles, including Yamaha, Honda, Piaggio, Vespa, Genuine, Peugeot and KYMCO models.
- Look up STIHL, Husqvarna, ECHO, Shindaiwa, RedMax and Makita tools.
- Search by brand, model code, engine family, use or oil system.
- Filter and group results to narrow your search.
- Read model-specific oil requirements, year or serial details and break-in conditions.
- Distinguish premix engines from scooters with a separate oil tank.
- Open the manufacturer source from each profile.
- Open scooter references from the iPad Reference sidebar.
MORE CHAINSAW INFORMATION
- Browse 45 chain profiles with manufacturer links.
- Find expanded Carlton and STIHL model guidance.
- Search by chain code, manufacturer, pitch or file size.
- Find specialist, low-profile, carbide and legacy guidance.
- Measure pitch across three rivet centers and compare drive-link thickness.
- Convert inch fractions and millimeters without choosing a file from pitch alone.
HELP WHEN YOU NEED IT
- Open Help beside calculators, forms and reference screens.
- Read longer explanations on their own screen.
- Keep the main screen focused on entries and results.
- Find formulas and the complete calculator guide in More.
- Review the difference between oil injection and gasoline injection.
RESET AND SAVE WITH CLEAR FEEDBACK
- Reset a calculator to its starting values without deleting saved history.
- Reload the latest saved values in record and equipment editors.
- Reset search filters and transfer choices without clearing your database.
- See a brief confirmation after a successful save.
- See one save banner at a time, even in an editor.
YOUR MACHINES AND FUEL, TOGETHER
- Save machine names, photos, checked ratios and preferred units.
- Name containers and enter their permitted fill limits.
- Keep mixing dates, fuel, oil, additives and intended equipment with each batch.
- Check estimated finished mixture volume, including oil and additives.
- Review days since mixing and choose an optional fuel review alert.
- Mark a batch used up or a can emptied while keeping its history.
- Start a new draft with Mix again.
- Create PDF or PNG labels with the container, ratio, date and contents.
CALCULATE, CONVERT AND FIND RECORDS
- Use one converter with 41 units across six categories.
- Calculate additive doses or fuel quantity from available mixing oil.
- Search saved calculations and batch history.
- Combine type, status and date filters, then choose a sort order.
- Keep browsing as records load automatically.
- Follow related records in iPad sidebars and detail views.
- Choose Light, Dark or Follow System.
MORE OPTIONS FOR YOUR DATA AND WATCH
- Export entity data as CSV or transfer saved items as JSON.
- See total saved items and counts for each record type.
- Skip matching items when importing again.
- Transfer up to 10,000 items, with a separate 100 MB JSON limit.
- Use all 16 Watch tools without Pro or a nearby iPhone.
- Save, share and reset Watch calculations with unlimited calculator use.
Try 50 free calculations on iPhone and iPad. Monthly or lifetime Pro adds unlimited calculations, record management and fuel workflows. Watch records stay on the Watch and do not sync to the phone. Always check your exact machine's instructions. Fuel review dates do not establish safety or expiry.
The developer, Verosocial Studio, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Verosocial Studio
- Size
- 14.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly Upgrade Premium Version $0.99
- Pro Lifetime Upgrade $8.99
- Copyright
- © Copyright 2026 Verosocial Studio