Open Air Calculator

Please use numbers in decimal format. Use the conversion table for fractions.

Round - 60° Staggered Center

	- Hole Diameter ( D ) - Center ( C ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )



Round - Straight Center
	- Hole Diameter ( D ) - Center ( C ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )

Square - Straight or 45° Staggered Center
	- Hole Diameter ( D ) - Center ( C ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )

Round End Slot - Staggered Center
	- Width of Slot ( W ) - Length of Slot ( L ) - Side Center ( B ) - End Center ( A ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )

Round End Slot - Straight Center
	- Width of Slot ( W ) - Length of Slot ( L ) - Side Center ( B ) - End Center ( A ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )

Square End Slot - Staggered or Straight Centers
	- Width of Slot ( W ) - Length of Slot ( L ) - Side Center ( B ) - End Center ( A ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )

Hexagon
	- Hole Diameter ( D ) - Center ( C ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )

Round 45° Staggered Center
	- Hole Diameter ( D ) - Spacing ( S ) - Open Area ( OA ) - Holes per Square Inch ( HPSI )