Fuel/oil mix calculator

  1. Input
  2. Result

Input

: 150:1 means 50 parts gasoline to 1 part oil by volume.
g/mlOptional. Use the density from the oil data sheet; leave blank when measuring oil by volume.
Ratio examples, not engine recommendations
Use your engine manualExamples are ratio calculations, not recommendations for a particular engine. Follow the engine and oil instructions, use a suitable fuel container and mix away from ignition sources.

Two-stroke fuel and oil mix calculator

The calculator helps prepare common two-stroke mixes for tools, small engines and hobby equipment.

Always follow engine and oil manufacturer recommendations; this tool only performs the ratio calculation.

Quick start

Calculate oil from gasoline or finished mixture volume with explicit units.

  1. Check the ratio in your engine manual
  2. Choose volume basis and liters or gallons
  3. Calculate oil volume and optional mass
✓ Use the calculator to turn input values into a clear, repeatable result.
✓ Keep units and assumptions visible so the calculation can be checked later.
✓ Copy the result or key numbers for reports, messages or spreadsheets.
✓ Reset to defaults when you want to compare another scenario from a clean state.
✓ Calculators run in the browser and are useful for quick estimates before formal checks.
✓ For finance, health, engineering or legal decisions, verify important results with a specialist or official source.

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