Weight of Tempered Glass


Surely there must be a table on this, or some other web site, listing the density of tempered glass (specifically, 3/8" tempered glass.)
Thanks for any and all help,

Guest User
Fri, 16/06/2006 - 07:56

Hi Mike,
The density of tempered glass is exactly the same as raw glass which is approximately 2270 kg/m^3 (2.27 kg/m^2/mm)
I assume you are in the USA, as you are asking about 3/8" glass, so the conversion is approximately 0.5 lbs/ft^2/mm which gives:
4.7625 lbs/ft^2 for 3/8" glass.
Be aware that even though you have ordered 3/8 glass, the float-line may give you something just under 3/8". (It improves their profit margin!)
Jonathan Barr

Guest User
Thu, 01/02/2007 - 22:03

My question is along the lines of the original. Is there a chart somewhere with the lbs per square foot or lbs per square inch for the different size thickness glass? The two sizes that I am looking for is 3/16 and 1/4 tempered? I would imagine that there is no difference between tempered and regular pane glass weight?

Any help would be greatly appreciated!


Guest User
Mon, 05/02/2007 - 20:20

A quick rule of thumb for glass weights (metric) is
2.5Kg/sqm per mm of glass thickness
ie 3.3sqm of 8mm glass weighs:
3.3 x 8 x 2.5 = 66Kg
In USA use 13.2lbs per sq ft per inch of thickness, ie 12sq ft of ½" glass:
12 x 0.5 (ie ½ ) x 13.2 = 79.2lbs, give or take an ounce

Guest User
Mon, 05/02/2007 - 23:25

To answer JJ's question, the rough numbers are here:
3/16": 2.55 lb/sqft, 1/4": 3.07 lb/sqft. The weight should be similar for anneal and tempered glass. Help this answers your question. If you need more help, please contact.

Guest User
Tue, 06/02/2007 - 00:59

The weight of the glass if it is being used as a coffee table will depend on the weight of your "chick" sitting on it plus pie 'r' squared *laughs*...sorry, just having some fun.

Guest User
Tue, 06/02/2007 - 13:05

Thanks, to everyone that replied that definately helps me out, even the reply from newbie (always enjoy good laugh). I can not tell how long I have been perusing the internet to find these answers. I indirectly was close to the lbs per square inch on the 1/4 glass from information that I found.

Again, Thanks!

In reply to by Guest User

Heather Pope
Fri, 21/12/2007 - 17:50

Well I just signed up for this website, so Im sure you already got your answer. But ....
3/16" = 2.51 pound per sqaure foot
1/4" = 3.28 " "

tempered and annealed are the same in weight

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