Thread Consumption Calculator — Total Thread Needed
Estimate total thread needed for seaming a garment.
All seams added together
Single layer
How We Calculate This
Thread consumption depends on seam length, stitch length, and fabric thickness. Top thread is used more than bobbin thread in a standard lockstitch.
The formula
Total stitches = Seam length ÷ Stitch length
Thread per stitch = Stitch length × 2.5 + Fabric thickness × 2
Bobbin thread ≈ Top thread × 0.6
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before cutting or purchasing fabric.