How to calculate it yourself
Pallets needed = total blocks ÷ blocks per pallet. For an 8×8×16 wall job: count blocks (1.125 per ft² of wall area for standard layout), divide by 100 for pallet count.
Common scenarios
Garden retaining wall (40 ft × 3 ft tall)
About 135 8×8×16 blocks (1.125 per ft²). 1.5 pallets — buy 2 and return the unopened one.
Garage stem walls (160 ft × 4 ft tall)
720 blocks. 7 pallets of 8×8×16 CMU. Plan for 2-3 deliveries unless your driveway can stage 7 pallets.
Small storage building (15×20 footprint × 8 ft tall)
630 blocks for the walls. 6.5 pallets (round up to 7). Plus mortar mix and rebar.