Glass · Weight
12 mm glass weight
12 mm glass weighs 30.0 kg per square metre, which is 2.79 kg or 6.14 lb per square foot. Float, toughened (tempered) and heat-strengthened glass weigh the same: the density is 2500 kg/m³ in every case.
Weight of 12 mm glass by size
| Size | kg | lb | Handling (the calculator's guideline) |
|---|---|---|---|
| 1 square foot (12 × 12 in) | 2.8 | 6.1 | One person, by the 25 kg guideline |
| 1 square metre | 30.0 | 66.1 | Two people, by the guideline |
| 2 × 3 ft (610 × 914 mm) | 16.7 | 36.9 | One person, by the 25 kg guideline |
| 4 × 8 ft (1219 × 2438 mm) | 89.2 | 196.6 | Three or four people, or a lifter |
| Stock sheet 2440 × 1830 mm (8 × 6 ft) | 134.0 | 295.3 | Mechanical lifter |
| Door panel 900 × 2100 mm | 56.7 | 125.0 | Three or four people, or a lifter |
| Shower screen 900 × 1900 mm | 51.3 | 113.1 | Three or four people, or a lifter |
| Window 1200 × 1200 mm | 43.2 | 95.2 | Two people, by the guideline |
| Half jumbo sheet (DLF) 3210 × 2250 mm | 216.7 | 477.7 | Mechanical lifter |
Glass only, monolithic. The handling column is the calculator's guideline of 25 kg per person lifting with suction cups; the shape, the wind and the route can call for more people or a lifter.
Your own size
Laminated and double glazed with 12 mm
- Laminated 6 + 6 mm with a 0.76 mm PVB interlayer (12.76 mm in all): 30.8 kg/m².
- Double glazed 12-16-12 (two 12 mm panes): 60.0 kg/m². The cavity weighs nothing; the spacer and sealant, a little, which the calculator leaves out.
How it is worked out
Weight = area × thickness × density. For one square metre of 12 mm glass: 1 m² × 0.012 m × 2500 kg/m³ = 30.0 kg. A square foot is 1/10.7639 of a square metre, so 30.0 ÷ 10.7639 = 2.79 kg, and × 2.20462 = 6.14 lb. The nearest US nominal thickness to 12 mm is 1/2".
Other thicknesses
3 mm · 4 mm · 5 mm · 6 mm · 8 mm · 10 mm · 12 mm · 15 mm · 19 mm · 25 mm
Laminated glass weight · Double glazing weight · Toughened glass weight
Questions people ask
- How much does 12mm glass weigh per square foot?
- 2.79 kg (6.14 lb) per square foot, or 30.0 kg per square metre, because glass has a density of 2500 kg/m³.
- How heavy is a 12 mm glass door?
- A 900 × 2100 mm panel weighs 56.7 kg (125.0 lb). By the calculator's guideline: three or four people, or a lifter.
- Does 12 mm toughened glass weigh more than ordinary glass?
- No. Toughening changes the stresses in the glass, not its density: 12 mm toughened (tempered) glass weighs the same as float, 30.0 kg/m².
- What does a 12 mm sheet of 2440 × 1830 mm (8 × 6 ft) weigh?
- 134.0 kg (295.3 lb).