TFA Calculator

Enter nozzle jet diameters in 32nds of an inch, then press ‘calculate’ to calculate the total nozzle flow area (in square inches).  Please email us at [email protected] if you experience problems. 

Please note: You may now enter the values in either 32nds of an inch or in thousandths of an inch (like Enderle Fuel injectors).  The answer will be calculated both ways. The top answer will be correct for oilfield bit nozzles entered in 32nds of an inch and the bottom one for Enderle nozzle sizes (i.e. 0.067″ diameter would be entered as 67, etc.)