Glass Size Calculator — Glazing for Picture Frames
Calculate the glass or acrylic glazing size needed for your frame.
How We Calculate This
Glass size = Frame rebate size - Clearance
Weight is calculated from area, thickness (2 mm standard) and material density. Glass weighs about 2.5 kg/m² per mm thickness; acrylic weighs about 1.19 kg/m² per mm.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.