Two-stroke fuel / oil mix chart
Look up oil quantities in the 50:1 reference below, or build a printable chart using the ratio from your equipment manual.
50:1 fuel mixing chart
50 parts petrol to 1 part oil, by volume. Start with the petrol already measured, then add the oil shown. Use this table only if your equipment manual specifies 50:1.
| Petrol (L) | Oil to add (mL) |
|---|---|
| 1 | 20 |
| 2 | 40 |
| 5 | 100 |
| 10 | 200 |
| Gasoline (US gal) | Oil to add (US fl oz) |
|---|---|
| 1 | 2.56 |
| 2 | 5.12 |
| 2.5 | 6.4 |
| 5 | 12.8 |
These are petrol amounts, not finished mixture amounts: 5 L petrol + 100 mL oil makes approximately 5.1 L mixture. US gallons and fluid ounces differ from Imperial units.
Use another ratio or make a printable chart ↓Build your own fuel / oil chart
Questions about this calculation
Does 5 L mean petrol or the finished fuel mixture?
In this chart it means petrol or gasoline already measured, before adding oil. Oil is added to that quantity, so the finished volume is larger. Use the fuel/oil calculator if you need to start from a desired finished mixture instead.
Should all two-stroke equipment use 50:1?
No universal ratio is assumed here. Enter the ratio from the exact equipment manual and follow its fuel, oil and mixing instructions. An example chart for one ratio or manufacturer does not establish the right ratio for other equipment.
Are US gallons and Imperial gallons interchangeable?
No. A US gallon is 3.785411784 L; an Imperial gallon is 4.54609 L. US and Imperial fluid ounces are also different. The selected input units are explicit, and the oil column labelled US fl oz always uses US fluid ounces.
Can I enter several quantities with decimal commas?
Yes. Use semicolons between quantities, for example 1,5; 2,5; 5. A comma or decimal point can mark a decimal, while a semicolon separates the rows.
Sources and measurement basis
Use the exact current instructions for your product, version and market. Review date: 16 October 2026.