Input Specified Data to Calculate the Open Area

In the selection of perforated metal sheets, open area is a very important concept to understand. If the punching is too concentrated, the pressure resistance of the metal sheet will decrease. And if the punching is too discrete, the hole pitch will be too wide while affect the decorative effect.

Here are some open area calculators of the standard perforation patterns. Just fill in the corresponding parameters to calculate the open area you need. For special patterns, please contact us for dedicated service.

Round Hole (Straight Pattern)

Enter hole diameter in mm:

d

Enter center distance in mm:

c

Open area = %
Round Hole (45 ° Staggered)

Enter hole diameter in mm:

d

Enter center distance in mm:

c

Open area = %
Round Hole (60 ° Staggered)

Enter hole diameter in mm:

d

Enter center distance in mm:

c

Open area = %
Square Hole (Straight Pattern)

Enter hole diameter in mm:

d

Enter center distance in mm:

c

Open area = %
Square Hole (Staggered Pattern)

Enter hole diameter in mm:

d

Enter center distance in mm:

c

Open area = %
Square Hole (45 ° Staggered)

Enter hole diameter in mm:

d

Enter center distance in mm:

c

Open area = %
Slotted Hole (Staggered)

Enter short edge in mm:

a

Enter edge length in mm:

b

Enter vertical center distance in mm:

c

Enter horizontal center distance in mm:

c₁

Open area = %
Slotted Hole (45 ° Staggered)

Enter short edge in mm:

a

Enter edge length in mm:

b

Enter vertical center distance in mm:

c

Enter horizontal center distance in mm:

c₁

Open area = %
Slotted Hole (Straight Pattern)

Enter short edge in mm:

a

Enter edge length in mm:

b

Enter vertical center distance in mm:

c

Enter horizontal center distance in mm:

c₁

Open area = %
Hexagonal Hole (60 ° Staggered)

Enter hole diameter in mm:

d

Enter center distance in mm:

c

Open area = %
Rectangular Hole (Straight Pattern)

Enter hole width a in mm:

a

Enter hole length b in mm:

b

Enter pitch c in mm:

c

Enter pitch c₁ in mm:

c₁

Open area = %
Rectangular Hole (Staggered)

Enter hole width a in mm:

a

Enter hole length b in mm:

b

Enter pitch c in mm:

c

Enter pitch c₁ in mm:

c₁

Open area = %
Triangle Hole (Staggered)

Enter hole width a in mm:

a

Enter hole length b in mm:

b

Enter pitch c in mm:

c

Enter pitch c₁ in mm:

c₁

Open area = %