Glass Weight Calculator

Sample Glass Weight Report

The online Glass Weight Calculator instantly computes area, mass per unit area (kg/m² or lb/ft²), weight per unit area (kN/m² or psf), total mass (kg and lb) and total weight (kN/kip) based on panel geometry and layer thicknesses. You can switch between SI and US/Imperial units with one click. Default glass density is ρ = 2500 kg/m³ (≈ 156.07 lb/ft³) and the laminated interlayer contribution is 0.010 kN/m²·mm (≈ 2.0885 psf/in).

Shapes: rectangular and triangular panels
Flexible layer stack: glass, interlayer, cavity
Outputs: area, m_areal, w_areal, m_total (kg & lb), W_total
Unit-aware report with print/PDF friendly layout

View Sample Report

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📊 Single Glass Weight Chart (Popular Thicknesses)

Weight per unit area for monolithic glass (no interlayer/air gap)
Thickness	Weight	Weight
(in • mm)	(lb/ft²)	(kg/m²)
1/8″ (3.2 mm)	1.63	7.94
5/32″ (4.0 mm)	2.03	9.92
3/16″ (4.8 mm)	2.44	11.91
1/4″ (6.4 mm)	3.25	15.88
5/16″ (7.9 mm)	4.06	19.84
3/8″ (9.5 mm)	4.88	23.81
1/2″ (12.7 mm)	6.50	31.75
5/8″ (15.9 mm)	8.13	39.69
3/4″ (19.1 mm)	9.76	47.63

📊 Double-Glazed (IGU) Weight — No Air Gap

Total glass mass only (air space & interlayer not included)
IGU Combination	Total Glass t	Weight	Weight
(in + in)	(in • mm)	(lb/ft²)	(kg/m²)
1/8″ + 1/8″	1/4″ (6.4 mm)	3.25	15.88
3/16″ + 3/16″	3/8″ (9.5 mm)	4.88	23.81
1/4″ + 1/4″	1/2″ (12.7 mm)	6.50	31.75
5/16″ + 5/16″	5/8″ (15.9 mm)	8.13	39.69
3/8″ + 3/8″	3/4″ (19.1 mm)	9.76	47.63
1/2″ + 1/2″	1″ (25.4 mm)	13.01	63.50

Assumptions: glass density ρ = 2500 kg/m³ (≈ 156.07 lb/ft³). Tempered glass weighs the same as annealed glass of the same thickness. For IGUs, the table shows glass only (no air space, no interlayer mass).

Inputs

Project Subject Prepared by Approved by

Unit System Shape Quantity (n) ρ_glass kg/m³ Interlayer weight kN/m²·mm

Note: According to EN 1991-1-1, the nominal weight density of glass is γ ≈ 25 kN/m³ (approximately ρ ≈ 2500 kg/m³). Default interlayer contribution 0.010 kN/m²·mm ≈ 1.02 kg/m²·mm.

Width W Height H

Base b Height h

Layers

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Results

Area (single panel)

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m_areal

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w_areal

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m_total (kg)

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m_total (lb)

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W_total

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In an IGU, the cavity thickness is not included in weight. Interlayers are considered via their weight contribution in kN/m²·mm (or psf/in).

Disclaimer: This calculator is for preliminary sizing. Final design shall be verified by a qualified engineer to the relevant standards.

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