The Home Depot has a weight calculator for CDX, OSB and more.
The plywood weight calculator can be used to estimate the total weight of any size and type of plywood.
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The densities are derived from Home Depot and Menards.Due to different wood species, layups and glues, these densities can vary a lot from manufacturer to manufacturer.
The thickness of the plywood can be slightly different than what is sold as.Home Depot has an example.
Some stores label their products closer to the actual thickness of the plywood to reflect the tolerances to which they are made.You can see the following.
All of this varies from manufacturer to manufacturer.If it is important to your project, be aware of what you are getting.
This calculator can only be used for estimation purposes, as there can be a lot of variability in weights between different manufacturers.
The final weight can be affected by things like wood species, glues, and layups.
The treated plywood's moisture content varies wildly.Depending on the amount of drying time the plywood has had before you buy it.You could get two 48 sheets of treated plywood, each the same thickness, and have one weigh more than the other.This is according to the manufacturer.
It's a good idea to get a moisture meter before you buy.They aren't too expensive and are great little tools.I use this on a daily basis.It is great to test firewood for seasoning.