Cinder blocks come in a variety of shapes and sizes, so the weight range of cinder blocks varies significantly. The most commonly sized cinder blocks measure 8 by 8 inches by 16 inches, weigh 37 pounds.
Cinder blocks are designed to provide reliable structural support in a variety of construction jobs. Thus, some of the smallest blocks can weigh as little as 12 pounds, and some of the biggest can be as heavy as 67 pounds. Either way, when working with cinder blocks it is important to lift them safely this means people should lift with their legs instead of their back.