Search Ctrl K
Home / Tools
THE FEUTEX TOOLKIT

Elastic Casing and Overlap

Plan elastic cut length and fabric casing clearance from a measured body circumference and selected stretch.

Crafts workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaElastic cut length = body*(1-reduction/100)+overlap; Folded casing strip width = 2*(elastic+ease)+2*seam

Made for real tasks

  • Plan elastic cut length and fabric casing clearance from a measured body circumference and selected stretch.
  • Compare an alternative set of measurements without uploading personal data.
Explore step-by-step workflows →

Worked example

Inputs

Measured circumference
80 cm
Desired elastic reduction
10 %
Elastic join overlap
3 cm
Elastic width
2.5 cm
Casing clearance
0.4 cm
Casing seam allowance
1 cm

Expected results

Elastic cut length
75 cm
Folded casing strip width
7.8 cm

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter measured circumference, desired elastic reduction, elastic join overlap, elastic width, casing clearance, and casing seam allowance in the displayed units.
  2. Calculate and use each labeled result for elastic casing and overlap. Compare the result with a measured sample before committing materials.

Try this example

{
  "body": 80,
  "reduction": 10,
  "overlap": 3,
  "elastic": 2.5,
  "ease": 0.4,
  "seam": 1
}

Accuracy and scope

Comfort fit cannot be inferred from circumference alone; stretch-test elastic and fit before stitching permanently.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.