Glass Area Calculator
Calculate total glass area from window dimensions and quantities.
Window Group 1
Total width of the area or object
Total height from base to top
Count
Window Group 2 (optional)
Total width of the area or object
Total height from base to top
Count
Window Group 3 (optional)
Total width of the area or object
Total height from base to top
Count
How We Calculate This
How the calculation works
Glass area is calculated from window width and height, then multiplied by the number of panes.
Formula
Area per pane = (width cm ÷ 100) × (height cm ÷ 100) = m²
Group subtotal = area per pane × number of panes
Total area = sum of all group subtotals
You can enter up to 3 different window sizes. Leave unused groups blank.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities and timings for your specific situation.