Free web tool
Stained Glass Calculator
Calculate panel glass area with waste and scale a stained glass pattern proportionally in inches or centimeters.
Glass Area Calculator
Net panel glass0
Glass to buy0
Square feet0
Square meters0
Pattern Scale Calculator
Scale0%
New width0
New height0
Foil, Came, Solder & Studio Pricing
The iPhone app adds copper foil or lead came length, solder consumption, labor, overhead, markup, target margin, saved projects, material presets, and CSV export.
How much stained glass should I buy?
Start with panel area, reduce it by your estimated glass coverage, then add a cutting waste allowance. Complex curves, rare colors, and directional textures may need a larger allowance.
Does pattern scaling preserve the aspect ratio?
Yes. This calculator derives one scale factor from the target width and applies it to both original dimensions.
Are the results exact?
No. They are planning estimates. Cutting loss, pattern complexity, construction method, bead size, and technique change actual material use.