Is CMU the same as a cinder block?

Most buyers use the terms interchangeably; CMU is the modern concrete unit. The count is the same for a given block size.

CMU Block Calculator

Count exactly how many CMU (concrete masonry units) you need to build a wall.

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Divide the wall face area by one block's face. A standard CMU face is 16 in × 8 in (nominal).

Blocks = (Wall length × height in inches) ÷ (Block length × height in inches)

A 10 ft long, 8 ft high wall with 16 × 8 in CMU needs 90 blocks — add ~10% for cuts.

Is CMU the same as a cinder block?: Most buyers use the terms interchangeably; CMU is the modern concrete unit. The count is the same for a given block size.