Chainsaw Fuel Mix Calculator
Mixing fuel for your chainsaw or other two-stroke equipment? Enter your gasoline amount and required mix ratio to get the precise oil quantity needed.
Oil Needed
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Gasoline (fl oz)—
Oil Needed (fl oz)—
Oil Needed (mL)—
About this calculator
Calculate the correct amount of two-stroke oil to mix with gasoline for your chainsaw based on the manufacturer's fuel-to-oil ratio.
Frequently Asked Questions
What mix ratio should I use for my chainsaw?
Check your owner's manual — most modern chainsaws use a 40:1 or 50:1 gas-to-oil ratio, but some older models require 32:1.
Can I use any two-stroke oil?
Use an oil specifically rated for air-cooled two-stroke engines, ideally one formulated for chainsaws and outdoor power equipment.
What happens if I use too little oil?
Insufficient oil can cause inadequate lubrication, leading to overheating, piston scoring, and premature engine failure.