Formulas

Some calculations may often be relevant when working with perforated sheets.
 
Therefore on this page you will find some of the formulas most commonly used when working with perforated sheets. The calculations are carried out automatically by clicking the "Submit" button after you have typed the relevant figures, e.g. the size of a sheet.
 
The calculations available so far are:
 
Calculation of open area
This formula is used to calculate the airflow of a perforation pattern.
 
Weight of a perforated sheet
This formula is used to calculate the weight of a perforated sheet.
 
Size of an unfolded sheet
A formula to calculate the measurements of a sheet before folding.