How do I convert glass dimensions from inches to millimetres?

Multiply inches by 25.4 to get millimetres. For example, 60 inches = 1,524 mm. The Glazing Calculator can do this automatically — toggle the unit selector to Inches and enter your measurements directly.

What is the standard glass density used for weight calculations?

Standard float glass has a density of approximately 2,500 kg/m³, which equals 2.5 kg per square metre per millimetre of thickness. This is the industry-accepted value used in AS 1288 and by glass manufacturers worldwide.

Does the spacer in double glazing affect the weight?

No. The aluminium or warm-edge spacer bar in an IGU contributes negligible weight compared to the glass panes. Only the glass thickness matters for weight calculation.

Is this calculator accurate enough for quoting jobs?

Yes. The area and weight formulas use the same industry-standard values used by glass manufacturers and suppliers across Australia. Always confirm pricing with your supplier.

Can I use this calculator offline?

The web version requires an internet connection. For offline use, download the free Android app from the Google Play Store — it works completely offline with no sign-up required.

Glass Handling Safety Tips for On-Site Work

Glass handling is one of the highest-risk activities in the construction industry. A single lapse in technique can result in serious lacerations, crush injuries, or worse. Here are the essential safety practices every glazier should follow.

Manual Handling Limits Safe Work Australia recommends: • Under 25 kg: Safe for one person to lift in ideal conditions • 25–55 kg: Two-person lift, or one person with a mechanical aid • Over 55 kg: Always use a mechanical lifting device (vacuum lifter, crane, etc.)

Always calculate the weight before attempting to handle a panel. Use the Glazing Calculator to get an instant weight estimate from your dimensions and glass type.

Personal Protective Equipment (PPE) • Cut-resistant gloves (Level 5): Mandatory when handling any glass • Safety glasses: Protect against chips and splinters during cutting and fitting • Steel-capped boots: Essential for protecting feet from dropped panels • Long sleeves: Recommended when carrying large panels against the body

Carrying Techniques • Always carry glass vertically, never flat — a flat panel can flex and snap • Use both hands and keep the panel close to your body • On windy days, treat every panel as a sail — use extra hands or wait for the wind to drop • Never carry glass above head height unless using a mechanical lifter

On-Site Storage • Store glass vertically in an A-frame rack on level ground • Place rubber or carpet pads between panels to prevent scratching • Secure the rack against tipping, especially on uneven ground • Keep the storage area clear of foot traffic and away from vehicle paths

Breakage Protocol If a panel breaks during handling: 1. Stop — do not try to catch falling glass 2. Move away from the fall zone 3. Secure the area and warn others 4. Clean up all fragments, including small splinters 5. Report the breakage and document it for safety records

Working at Heights When installing glass above 2 metres, additional controls are required: • Use scaffolding or an elevated work platform — never ladders for glass installation • Barricade the area below to prevent injury from dropped tools or glass • Have a spotter on the ground at all times

Glass Handling Safety Tips for On-Site Work

Related Tools