How to Use This Calculator

Enter the amount of air and fuel used during combustion in grams. Click the "Calculate AFR" button to get the air-fuel ratio. This tool helps you determine if the mixture is rich or lean.

Use For

• Internal combustion engines
• Fuel mixture optimization
• Emission control analysis

Formula

AFR = Air (g) / Fuel (g)

Example

If you input 1400g of air and 100g of fuel, the AFR would be:

AFR = 1400 / 100 = 14

This is considered a stoichiometric ratio for gasoline engines.