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Calculate lye and oil amounts for cold-process soap recipes. Use our free soap making calculator online tool — instant results, no upload, completely private.
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Pattern pieces and fabric width to meters or yards needed.
Cut size minus finished size for seam allowance, or add seam to pattern piece.
Seam length and stitch type to thread needed in meters.
Fabric type to recommended needle size. Reference table.
No signup, no upload, 100% private. Works right in your browser on any device.
Open Soap Calc