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Precut Fabric Calculator

Convert charm packs, layer cakes, jelly rolls, fat quarters and more to yardage and back, or find out how many precuts you need for your pieces.

How to Use the Precut Fabric Calculator

1. Choose what you want to know.
2. Enter your precut, yardage or piece size.
3. Select Calculate.

Please note: Calculations use a 40" usable width of fabric (WOF) and ¼" seams unless you choose otherwise. Results are a helpful guide; patterns, fabrics and cutting vary, so allow a little extra.

What do you want to know?
Check your pack. Most have 40 or 42.
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