Use this calculator when pleating up a fabric panel to a finished curtain width. For a given number of pleats, the calculator will find the pleat sizes and gap sizes required to make the curtain.

How to Calculate your pleats

• Fold a sample pleat to find approximately what your ideal width of pleat and gap size is.
• Enter the following values in cms.
  • Width of fabric panel to be pleated
  • Finished curtain width
  • Left end
  • Right end
• Select a number of pleats
• Press Enter to calculate
• If necessary change the number of pleats and Recalculate until you find the best "Pleat size" and "Gap size" for the curtain.