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소개

Air-Fuel Ratio Calculator — Calculate air-fuel ratio and lambda from air and fuel mass. Enter Mass of air, Mass of fuel to get an instant, accurate result.

공식

AFR = mass of air / mass of fuel. Lambda (λ) = actual AFR / stoichiometric AFR (14.7:1 for gasoline) — lambda of 1.0 is a perfectly balanced (stoichiometric) mixture.

단계별 안내

Enter the Mass of air.
Enter the Mass of fuel.
Click Calculate to see your result instantly.

실제 예시

Example: With Mass of air = 14, Mass of fuel = 1, the Air-Fuel Ratio Calculator gives Afr: 14, Lambda: 0.9524.

자주 묻는 질문

What does lambda greater or less than 1 mean?

Lambda above 1.0 is a lean mixture (more air relative to fuel); below 1.0 is rich (more fuel relative to air).

Why is 14.7:1 used as the stoichiometric baseline?

That's the theoretically ideal air-to-fuel ratio for complete combustion of gasoline; other fuels (like E85 or diesel) have different stoichiometric ratios.

What inputs does the Air-Fuel Ratio Calculator need?

You'll need to provide: Mass of air, Mass of fuel. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the Air-Fuel Ratio Calculator?

The Air-Fuel Ratio Calculator applies the formula exactly as calculated — AFR = mass of air / mass of fuel. Lambda (λ) = actual AFR / stoichiometric AFR (14.7:1 for gasoline) — lambda of 1.0 is a perfectly balanced (stoichiometric) mixture. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Is the Air-Fuel Ratio Calculator free to use?

Yes, the Air-Fuel Ratio Calculator is completely free, requires no signup, and runs instantly in your browser.