Elastic Calculator

Calculate the right elastic length for any sewing project

Elastic cut at 80% of body measurement (standard for waistbands)

Elastic Width Guide

WidthBest For
1/4" (6mm)Lightweight gathers, masks, sleeves
3/8" (10mm)Necklines, lingerie, children's wear
1/2" (13mm)Cuffs, light waistbands
3/4" (19mm)Standard waistbands, skirts
1" (25mm)Pants waistbands, athletic wear
1.5" (38mm)Wide waistbands, belted looks
2" (50mm)Fitted sheets, heavy-duty applications
Tip: Wrap elastic around yourself at the intended location before cutting. It should feel snug but comfortable. When in doubt, go slightly longer -- you can always tighten but cannot stretch what you cut too short.