Glass Weight Calculator

This is a straightforward flat-glass weight calculator: panel area (width times height, converted from millimeters to meters) multiplied by thickness and by the density of the selected glass type gives weight per panel, which is then multiplied by panel count and by a waste allowance for the shipment total. The default soda-lime float glass density of 2,500 kg/m³ (equivalently, 2.5 kg per square meter per millimeter of thickness — a handy rule of thumb glaziers use for quick mental math) also covers tempered and low-iron/ultra-clear glass, since tempering and iron-content reduction don't meaningfully change the base material's density. Borosilicate is noticeably lighter at 2,230 kg/m³, owing to its different oxide chemistry, while lead crystal is markedly denser at 3,100 kg/m³ because lead oxide replaces some of the silica.

The waste allowance is applied only to the total shipment weight, not to the per-panel figures, so use "total with waste" rather than "total weight" when estimating what you'll actually need to purchase or ship to cover cutting losses. This calculator reports glass weight alone — it does not add the weight of a frame, IGU spacer and seal, lamination interlayer, or coating; a heavy aluminum frame or a thick PVB lamination layer can add substantial weight on top of the bare glass figure, so treat the output as the bare-glass component of any structural load or freight calculation.