SewnCake Sewing Tools
Measure less. Make more.
Simple, friendly sewing calculators built for real makers — without forcing you to turn ⅜" into a decimal first.
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Pouch Pattern Calculator
Plan a finished boxy pouch and calculate the pattern pieces.
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Boxed Corner Calculator
Turn a desired finished depth into an easy corner measurement.
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Seam Allowance Converter
Quickly switch common sewing fractions between inches, millimeters and centimeters.