The weight of a sheet of drywall depends on the thickness, brand and type of drywall. A 4-foot by 8-foot sheet of 1/2-inch thick standard drywall weighs approximately 52 pounds. Moisture resistant drywall, or green board, weighs about the same as standard drywall.

It is possible to estimate the weight of a sheet of drywall by multiplying the total number of square feet by the weight of drywall per square foot. One square foot of 1/2-inch thick drywall weighs approximately 1.6 pounds, while 5/8-inch thick drywall weighs an average of 2.31 pounds per square foot. Since 2010, ultralight drywall is a popular alternative. This lightweight drywall can weigh 30 percent less than standard drywall.