2-Stroke Oil Mix Calculator

Mixing 2-stroke fuel wrong destroys engines. Enter how much fuel you have and your required ratio — 25:1, 40:1, 50:1 or anything in between — and get the exact oil volume in the unit you need.

🔨 Engine-safe

Too little oil seizes pistons; too much fouls plugs and smokes. Get it exactly right.

⚖ Common ratios

Presets for chainsaws, mopeds, dirt bikes and outboards.

📊 Any unit

Gallons, liters or milliliters in — ounces, ml, spoons or cups out.

🔒 Private

Calculates instantly in your browser, no uploads.

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Keep your engine happy.