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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(%)

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