Free calculator
Fabric Yardage Calculator
Buying fabric is the one purchase you cannot top up later, because the same dye lot will be gone. This calculator takes the garment type, the size, the fabric width and whether the cloth has a pattern to match, and returns a length with the waste already allowed for.
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Stitch Length & Tension Calculator
Suggest a stitch length, a needle size and an upper tension for a fabric and a stitch type, with a test-seam reminder.
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Pattern Size Grading Calculator
Move a pattern up or down one or more sizes and see how much each seam has to move, and when to re-draft instead.
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