Open area calculators

Determine the correct perforated pattern for your perforated metal solution using the open area calculators on this page

Enter any two of the following values: hole size, pitch, or open area, to calculate the third.

Generally, the pitch dimension should be greater than the sum of the hole size and the material thickness.

The calculators on this page are designed for open area calculations only and do not guarantee the feasibility of the suggested perforation.

RMIG Solutions is not responsible for any errors in the calculation results, including input mistakes or calculator inaccuracies.

Round holes - triangular pitch

Round holes - rectangular pitch

Hole size - R Pitch 1 - U1 Pitch 2 - U2 Open area

Square holes - rectangular pitch

Hole size - C Pitch 1 - U1 Pitch 2 - U2 Open area

Square holes - staggered pitch

Hole size - C Pitch 1 - Z1 Pitch 2 - Z2 Open area

Slot holes - staggered pitch

Hole size - R Hole length - L Pitch 1 - Z1 Pitch 2 - Z2 Open area

Rectangular holes - staggered pitch

Hole width - C Hole length - L Pitch 1 - Z1 Pitch 2 - Z2 Open area

What does "open area" mean?

Open area is the percentage of a sheet occupied by holes. For instance, a 40% open area means 40% of the sheet consists of holes and 60% is solid material.

The open area impacts the perforated sheet in terms of appearance, durability, shading, ventilation, function and overall performance.