Glass · Weight
4 mm glass weight
4 mm glass weighs 10.0 kg per square metre, which is 0.93 kg or 2.05 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 4 mm glass by size
| Size | kg | lb | Handling (the calculator's guideline) |
|---|---|---|---|
| 1 square foot (12 × 12 in) | 0.9 | 2.0 | One person, by the 25 kg guideline |
| 1 square metre | 10.0 | 22.0 | One person, by the 25 kg guideline |
| 2 × 3 ft (610 × 914 mm) | 5.6 | 12.3 | One person, by the 25 kg guideline |
| 4 × 8 ft (1219 × 2438 mm) | 29.7 | 65.5 | Two people, by the guideline |
| Stock sheet 2440 × 1830 mm (8 × 6 ft) | 44.7 | 98.4 | Two people, by the guideline |
| Door panel 900 × 2100 mm | 18.9 | 41.7 | One person, by the 25 kg guideline |
| Shower screen 900 × 1900 mm | 17.1 | 37.7 | One person, by the 25 kg guideline |
| Window 1200 × 1200 mm | 14.4 | 31.7 | One person, by the 25 kg guideline |
| Half jumbo sheet (DLF) 3210 × 2250 mm | 72.2 | 159.2 | Three or four people, or a 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 4 mm
- Double glazed 4-16-4 (two 4 mm panes): 20.0 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 4 mm glass: 1 m² × 0.004 m × 2500 kg/m³ = 10.0 kg. A square foot is 1/10.7639 of a square metre, so 10.0 ÷ 10.7639 = 0.93 kg, and × 2.20462 = 2.05 lb. The nearest US nominal thickness to 4 mm is 5/32".
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 4mm glass weigh per square foot?
- 0.93 kg (2.05 lb) per square foot, or 10.0 kg per square metre, because glass has a density of 2500 kg/m³.
- How heavy is a 4 mm glass door?
- A 900 × 2100 mm panel weighs 18.9 kg (41.7 lb). By the calculator's guideline: one person, by the 25 kg guideline.
- Does 4 mm toughened glass weigh more than ordinary glass?
- No. Toughening changes the stresses in the glass, not its density: 4 mm toughened (tempered) glass weighs the same as float, 10.0 kg/m².
- What does a 4 mm sheet of 2440 × 1830 mm (8 × 6 ft) weigh?
- 44.7 kg (98.4 lb).