This calculator works out pleat sizes and space sizes for curtains (or drapes/drapery) — for pinch, double, cartridge, triple or goblet pleats, in cm or inches.

How to use this Calculator

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 Space 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 Space size is.
• Enter the following values in cms (or switch to Inches and fractions if you prefer).
  • Width of fabric panel to be pleated
  • Finished curtain width
  • *Leading Edge
  • *Return
• 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 "Space size" for the curtain.

For more detail see our Pleat and Spacing Guide

*Note your Leading Edge or Return will be on the left or right side of the curtain depending if you are making a lefthand or righthand curtain. The diagram above is for a righthand curtain.