Below are different open area calculators. Please enter any two fields for the calculation. There is also a conversion table to assist you. For more information, please contact us.

Hexagon Conversion Table - Hole Diameter (D) - Center (C) - Open Area (OA) - Holes per Square Inch (HPSI)
Round 45° Staggered Center Conversion Table - Hole Diameter (D) - Spacing (S) - Open Area (OA) - Holes per Square Inch (HPSI)
Round - 60° Staggered Center Conversion Table - Hole Diameter (D) - Center (C) - Open Area (OA) - Holes per Square Inch (HPSI)
Round End Slot - Staggered Center Conversion Table - 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 Conversion Table - Width of Slot (W) - Length of Slot (L) - Side Center (B) - End Center (A) - Open Area (OA) - Holes per Square Inch (HPSI)
Round - Straight Center Conversion Table - Hole Diameter (D) - Center (C) - Open Area (OA) - Holes per Square Inch (HPSI)
Square End Slot - Staggered or Straight Centers Conversion Table - Width of Slot (W) - Length of Slot (L) - Side Center (CW) - End Center (CL) - Open Area (OA) - Holes per Square Inch (HPSI)
Square - Straight or 45° Staggered Center Conversion Table - Hole Diameter (D) - Center (C) - Open Area (OA) - Holes per Square Inch (HPSI)