This tool simplifies calculating fuel additive mixture ratios. Users can select their preferred units of measure to easily determine the correct quantities for treating fuel volumes.



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Fuel Right is the household name in ratio fuel, but it's far from the only option. We track 248+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 5.0★ (3) | No | No | May 2026 | ||
| 2 | Free was $0.99 | 5.0★ (4) | No | No | Oct 2026 | ||
| 3 | $0.99 | 5.0★ (2) | No | No | Nov 2026 | ||
| 4 | Free | — | No | No | Jun 2026 | ||
| 5 | Free | 4.9★ (70) | No | Yes | Oct 2026 | ||
| 6 | Free | — | No | No | May 2026 | ||
| 7 | Free | 3.0★ (4) | No | No | May 2026 | ||
| 8 | Free | 5.0★ (2) | No | Yes | Oct 2026 |



This tool simplifies calculating fuel additive mixture ratios. Users can select their preferred units of measure to easily determine the correct quantities for treating fuel volumes.






This app calculates the precise oil needed for fuel mixtures based on various ratios and units. It also includes unit converters for common measurements and efficiency calculators for fuel consumption.


Easily calculate the correct oil-to-fuel ratio for your engine to prevent emissions and spark plug fouling. Adjust amounts precisely using sliders and buttons, and switch between metric and imperial units.