Height × Width = m² + Weight
Calculate glass panel areas, weight, and pricing instantly. Supports single & double glazed, laminate & toughened glass. Built for glaziers and tradespeople.
Full-featured glazing calculator — just like the app
🔷 Panel Shape
🪟 Glazing Type
🔲 Glass Thickness
📐 Unit
Total Panels
1
Total Area
0.0000 m²
Total Weight
0.00 kg
Total Price
$0.00
Designed specifically for glass industry professionals
Enter dimensions and get area, weight, and pricing results immediately.
Switch between single and double glazed with full thickness options for each.
Automatically calculates glass weight based on type, thickness, and area.
Enter your price per square metre and get instant cost calculations.
Switch between millimetres and inches for flexibility on any job.
Add unlimited panels with customer, job ref, and description fields.
Follow these simple steps to calculate glass panel area, weight, and cost for any job.
Type the height and width of your glass panel in millimetres or inches. Toggle between units using the unit selector.
Select single or double glazed, then pick the appropriate glass thickness. Options include laminate, toughened, and various IGU configurations.
Enter how many identical panels you need and your supplier's price per square metre to get an instant cost estimate.
The calculator instantly shows the total area in m², weight in kg, and price in dollars. Add more panels for a full job summary.
Understanding the differences between common glass types helps you choose the right product for every glazing job.
Toughened glass is heated to around 620°C then rapidly cooled, making it 4–5 times stronger than standard annealed glass. When it breaks, it shatters into small, blunt pieces rather than dangerous shards. It is required by Australian Standard AS 1288 in areas where human impact is likely — doors, sidelights, low-level panels, and wet areas such as shower screens. Common thicknesses for single-glazed toughened panels range from 4 mm to 12 mm.
Laminated glass consists of two or more sheets of glass bonded together with a polyvinyl butyral (PVB) interlayer, typically 0.38 mm thick. If the glass breaks, the interlayer holds the fragments in place, reducing injury risk and providing continued weather protection. It is commonly specified for overhead glazing, balustrades, and any application where fall-out protection is required. Popular laminate configurations include 6.38 mm (3/0.38/3), 10.38 mm (5/0.38/5), and 12.38 mm (6/0.38/6).
An Insulated Glass Unit (IGU) is made of two panes of glass separated by a sealed air or gas-filled spacer. The trapped air gap dramatically improves thermal insulation, reducing heat loss in winter and heat gain in summer. Double glazing also reduces noise transmission by up to 60%. Common IGU formats are described as glass/spacer/glass — for example, 6/12/6 means two 6 mm panes with a 12 mm spacer. The spacer width (8 mm, 12 mm, 16 mm) affects insulation but not glass weight.
Glass weighs approximately 2.5 kg per square metre for every 1 mm of thickness. A single 6 mm toughened panel therefore weighs about 15 kg/m². For laminated glass, the PVB interlayer adds negligible weight, so a 6.38 mm laminate is treated as roughly 15.2 kg/m². For double glazed units, the weight is the sum of both panes — a 6/12/6 IGU weighs approximately 30 kg/m². Knowing the weight is essential for selecting correct hardware, hinges, and ensuring safe manual handling on site.
Common questions about glazing calculations and using this tool.
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Download on Google PlayTrusted by tradespeople across Australia and beyond
"Use this daily for quoting. Saves me heaps of time calculating m² and weights for every job."
Matt K.
Glazier, Sydney
"The double glazed weight calc is spot on. Finally a tool that understands IGU formats properly."
James R.
Glass Installer, Melbourne
"Simple, fast, and free. I've got the app on my phone and use the website in the office. Love it."
Sarah T.
Window Fabricator, Brisbane
Keyboard shortcuts: Ctrl+N Add panel · Ctrl+Z Undo · Ctrl+Y Redo
Enter your glass panel dimensions in the width and height fields. Select your unit (millimetres or inches), your glass type (single or double glazed), and the specific thickness from the dropdown. The calculator instantly shows the area in square metres and the panel weight in kilograms. For pricing, enter your cost per m² and the total price updates automatically.
You can add multiple panels using the Add Panel button — each panel can have its own dimensions, glass type, and thickness. The job sheet at the bottom summarises total area, total weight, and total price across all panels. Use the Export PDF button to generate a printable summary, or Export CSV to import your data into a spreadsheet.
The calculator also supports non-rectangular shapes: triangles, circles, and arched panels — select the shape from the panel options. Switch between metric and imperial at any time using the unit toggle. All calculations update instantly with no page reload required.
All glass weight calculations use the industry-standard density of 2,500 kg/m³ — universally adopted by glass manufacturers and referenced in the Australian Standard AS 1288. This density translates to 2.5 kg per square metre per millimetre of glass thickness. For a 6mm panel that is 15 kg/m²; for a 10mm panel, 25 kg/m².
Laminated glass weight includes the PVB interlayer: a 6.38mm laminate (3mm + 0.38mm PVB + 3mm) weighs approximately 15.2 kg/m². For double glazed units (IGUs), the total weight is the sum of both glass panes; the air or gas fill and aluminium spacer contribute negligible weight. A standard 6/12/6 IGU weighs approximately 30 kg/m².
These values are consistent regardless of manufacturer because float glass is produced to tight thickness tolerances worldwide.
Raw glass from the float process. Used in low-risk interior applications, picture frames, and as the starting material for toughening and laminating. Available from 4mm to 19mm.
Heat-treated float glass — approximately four times stronger, breaking into small blunt fragments. Required by AS 1288 in most human impact zones. Available from 4mm to 12mm.
Two panes bonded with a PVB interlayer. Fragments stay attached when broken — standard for balustrades, overhead glazing, and safety applications. Common configs from 6.38mm to 21.52mm.
Two panes separated by a sealed spacer. The primary solution for thermal and acoustic performance. Common residential configs from 4/12/4 to 6/20/6 with Low-E coating.
See the full glass weight reference table for weight per m² across all common types and thicknesses.
Glass weight is the number one factor in determining how a panel is handled on site. Safe Work Australia's manual handling guidelines cap single-person lifts at approximately 25 kg. A 6mm toughened panel measuring 1.3m × 1.3m already exceeds this. Knowing the weight before the glass arrives on site lets you plan whether you need two people, a suction lifter, or a mechanical vacuum lifter — reducing the risk of injury and dropped panels.
For quoting, area accuracy directly affects your material cost. Glass is priced per m², so a measurement error of 20mm on a large panel can add or subtract $30–50 from your cost per panel. Over a job with twenty panels, consistent errors erode margin significantly. For hardware selection, hinges, sliding door tracks, and pivot systems are all rated by panel weight — specifying undersized hardware leads to premature failure and callbacks.
Using a calculator also creates a record. The Export PDF feature generates a panel-by-panel job sheet that can be included with your quote, submitted to a supplier for cutting, and kept as a site record. This reduces miscommunication and provides documentation if a measurement dispute arises.
2,500 kg/m³ — the industry-standard value used in AS 1288 and by glass manufacturers worldwide. This equals 2.5 kg per m² per mm of thickness.
Yes. Toggle any panel to inches using the unit selector. Results are displayed in m² and kg, which are the standard units used by glass suppliers.
The web version requires an internet connection. The free Android app works fully offline — useful for site work in areas with poor coverage.
Find the weight per m² for each pane from the glass weight table, add them together, then multiply by your panel area. For example, a 6mm + 10mm IGU: (15 + 25) × area.
The calculator has no hard limit, but very large panels may exceed the capacity of standard float glass sheets (typically 3210mm × 2250mm or 6000mm × 3210mm). Check with your supplier for oversized panel availability.
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