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Stained Glass Copper Foil Demand

Estimate foil length for repeated rectangular glass pieces with overlaps and waste.

Crafts workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaFoil length = (2*(width+height)+overlap)*pieces/100*(1+waste/100); Whole rolls = Math.ceil((2*(width+height)+overlap)*pieces/100*(1+waste/100)/roll)

Made for real tasks

  • Estimate foil length for repeated rectangular glass pieces with overlaps and waste.
  • Compare an alternative set of measurements without uploading personal data.
Explore step-by-step workflows →

Worked example

Inputs

Glass piece width
5 cm
Glass piece height
8 cm
Number of pieces
40 pieces
Foil overlap per piece
0.5 cm
Waste allowance
10 %
Foil per roll
33 m

Expected results

Foil length
11.66 m
Whole rolls
1 rolls

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 glass piece width, glass piece height, number of pieces, foil overlap per piece, waste allowance, and foil per roll in the displayed units.
  2. Calculate and use each labeled result for stained glass copper foil demand. Compare the result with a measured sample before committing materials.

Try this example

{
  "width": 5,
  "height": 8,
  "pieces": 40,
  "overlap": 0.5,
  "waste": 10,
  "roll": 33
}

Accuracy and scope

Materials estimate for equal rectangles; solder, glass grinding and safe work procedures are outside this calculation.

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.