Curtain Fabric Calculator
Full curtains use extra fabric so they gather in folds. This shows the width and length of fabric to buy, from your rod width and the fullness you choose.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Multiply the rod width by the fullness, usually 2 for a full look. Divide that by the fabric width and round up to get the number of widths.
Each width is cut to the finished length plus the hem and heading allowance. The total fabric needed is the number of widths times that length.
Worked example
A rod 120 in wide at a fullness of 2 needs 5 widths of fabric, about 14.44 yd in total.
Questions
What fullness should I choose?
Two times is a common full look. Light fabrics can take less, and heavy fabrics often look better with a little more.
Does the pattern repeat matter?
Yes, for printed fabric. Add one repeat's length to each width so the pattern lines up across the window.
Where do I measure the length from?
Measure from the top of the rod or header to the length you want, then add the allowance for the hem and heading.
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