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2-Stroke Oil Mix Calculator
Calculate oil required from entered fuel volume and the manufacturer-required fuel-to-oil ratio.
Inputs
Result
Initializing.
Method and worked example
R:1 means R parts fuel to one part oil by volume. Entered volume is fuel before oil. Oil = fuel ÷ R. One US gallon at 50:1 needs 2.56 US fl oz; 5 L at 50:1 needs 100 mL.
Scope and limitations
Use the mix ratio specified by your equipment manufacturer. This tool does not choose a ratio, engine compatibility, fuel grade, oil specification, mixing procedure, handling, storage, or warranty requirement.