How much does a concrete block weigh?

Question

Accepted Answer

A standard 8 × 8 × 16 inch concrete block (CMU) weighs 36–43 lb hollow, or 75–85 lb solid. Concrete masonry units (CMUs) — what most people call "concrete blocks" — come in standard sizes with predictable weights.  The most common size, 8 × 8 × 16 inches (nominal), weighs about 36–43 lb for a hollow block and 75–85 lb for a solid block. Lightweight versions (made with lighter aggregate) weigh about 28–33 lb hollow.  For larger sizes, weight scales roughly with volume. A 12 × 8 × 16 in solid block can weigh 100+ lb — heavy enough to require two people or equipment to set.

Block size (in)	Hollow weight	Solid weight
4 × 8 × 16	20 – 25 lb	32 – 38 lb
6 × 8 × 16	26 – 32 lb	55 – 65 lb
8 × 8 × 16 (standard)	36 – 43 lb	75 – 85 lb
10 × 8 × 16	45 – 52 lb	90 – 100 lb
12 × 8 × 16	52 – 60 lb	100 – 115 lb

How much does a concrete block weigh?

Related questions