The weight of a standard sheet of 4-foot-by-8-foot drywall with a thickness of 1/2 inch is 57.6 lbs. The weight of a drywall sheet depends on its thickness.
There are various thicknesses of 4-foot-by-8-foot drywall sheets, like 1/4 inch, 3/8 inch, 1/2 inch and 5/8 inch. The 1/4-inch Drywall sheet has a weight of 29.58 lbs. Since it is very thin, it is more suitable as a laminating sheet for covering a badly damaged area. The 3/8-inch drywall has a weight of 43.65 lbs. The 1/2-inch Drywall, which comes in varieties of moisture-resistant, fire-rated and regular, is sold in two versions, light and standard. The light version weighs 39.2 lbs. The 5/8-inch Drywall's light version weighs 51.2 lbs., while its standard version weighs 76.8 lbs.