Open Area Calculator

Just type a hole size, pitch, etc., and click the "Calculate" button.
The open area is automatically calculated for 10 different hole patterns.

 

Fill out the form, and click "Calculate" button.

(1)60deg.Staggered (2)45deg.Staggered (3)Straight (4)Round End Slot Staggered (5)Round End Slot Straight
(6)Square Staggered (7)Square Straight

(8)Hexagonal 60deg.Staggered

(9)Square End Slot Staggered (10)Square End Slot Straight

(1)60deg.Staggered
Open Area(%)=90.66×D2/P2

Fill out
D
P
Result
Open Area(%)

(2)45deg.Staggered
OpenArea(%)=157×D2/P2

Fill out
D
P
Result
Open Area(%)

(3)Straight

OpenArea(%)=78.5×D2/P2

Fill out
D
P

Result
Open Area(%)

(4)Round End Slot Staggered

OpenArea(%)=(2×W×L)-(0.43xW2)/2×SP×LP
×
100
Fill out
W
L
SP
LP
Result
Open Area(%)

(5)Round End Slot Straight

OpenArea(%)=(2×W×L)-(0.43×W2)/2×SP×LP
×
100
Fill out
W
L
SP
LP
Result
Open Area(%)

(6)Square Staggered

OpenArea(%)=W2/SP1×SP2
×
100
Fill out
W
SP1
SP2
Result
Open Area(%)

(7)Square Staggered

OpenArea(%)=W2/SP1×SP2
×
100
Fill out
W
SP1
SP2
Result
Open Area(%)

(8)Hexagonal 60deg.Staggered

OpenArea(%)=W2/P2
×
100
Fill out
W
P
Result
Open Area(%)

(9)Square End Slot Staggered

OpenArea(%)=WxL/SP×LP
×
100
Fill out
W
L
SP
LP
Result
Open Area(%)

(10)Square End Slot Straight

OpenArea(%)=WxL/SP×LP
×
100
Fill out
W
L
SP
LP
Result
Open Area(%)