What density value does this calculator use?

The calculator defaults to 2500 kg/m³, which is standard for monolithic soda-lime glass. You can also select borosilicate glass (2230 kg/m³) or structural pultruded fiberglass composite (FRP/GRP, ~1800 kg/m³).

How is the L-section area calculated?

The cross-sectional area of an L-section is: (Leg A × thickness) + (Leg B × thickness) − (thickness²). The subtraction prevents the corner intersection from being counted twice.

Are structural glass angles extruded like steel angles?

No. Monolithic glass cannot be hot-extruded into structural angle bars; solid glass L-shapes are custom fabricated by fusing or UV-bonding flat strips. Structural composite angle sections are pultruded fiberglass (FRP/GRP) with a lower density of ~1800 kg/m³ (about 28% lighter than solid glass).

What if both legs have different thicknesses?

This calculator assumes a uniform thickness across both legs. If your bar has unequal leg thicknesses, calculate each leg as a rectangular section separately and subtract the corner overlap volume.

What units can I use for input?

All inputs are in millimeters by default. The bar length field also accepts meters via a unit toggle. The output is always shown in both kg and lbs.

Glass Angle Weight Calculator

Enter leg dimensions, thickness, and bar length to instantly calculate the weight of a glass angle (L-section) bar.

Bar Dimensions

All values in millimeters unless noted.

Leg A length (mm)

Leg B length (mm)

Thickness (mm)

Material

Bar length

Weight Result

Enter dimensions and click Calculate.

Formula used

Area = (A × t) + (B × t) − t²

Volume = Area × Length

Weight = Volume × Density (2500 kg/m³ default; ~1800 kg/m³ for fiberglass FRP)

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Summary

Enter leg dimensions, thickness, and bar length to instantly calculate the weight of a glass angle (L-section) bar.

How it works

Enter the length of leg A (horizontal) in millimeters.
Enter the length of leg B (vertical) in millimeters.
Enter the uniform thickness of both legs in millimeters.
Select your material (soda-lime glass, borosilicate glass, or fiberglass FRP).
Enter the total bar length in millimeters (or switch to meters).
The calculator computes the L-section cross-sectional area, multiplies by length and density, and displays the weight in kg and lbs.

Use cases

Estimate glass angle profile weight for architectural and display assemblies.
Calculate shipping weight for custom fused or bonded glass L-sections.
Verify load calculations when designing glass shopfronts, showcases, or partitions.
Compare weight across different equal and unequal angle bar dimensions.
Estimate structural fiberglass (FRP) angle weight for composite framing.
Use in BIM workflows where glass and composite component weights are required.

Frequently Asked Questions

Last updated: 2026-09-19 · Reviewed by Nham Vu