Open Area Percentage Calculator

Round 60 Degree Staggered Centers
D² x 90.69 / C² = Open Area %

Round 45 Degree Staggered Centers
D² x 78.54 / C² = Open Area %

Round Straight Centers
D² x 78.54 / C² = Open Area %

Slotted Round End Side Staggered Centers
(W(L - .215W) / C_l x C_w) x 100 = Open Area %

Slotted Round End Straight Centers
(W(L - .215W) / C_l x C_w) x 100 = Open Area %

Slotted Square End Straight Centers
(L x W / C_l x C_w) x 100 = Open Area %