Fuel Injector Calculator

Enter the required parameters below to calculate the minimum fuel injector size for your application.

Aspiration
Fuel Pressure† PSIG
Desired Horspower HP
# of Fuel Injectors‡
Result

† Fuel pressure as measured at the rail.
‡ Number of equal sized fuel injectors. For most applications, the number of fuel injectors is equal to the number of cylinders in the engine.