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Concrete Block Calculator
Count concrete blocks (CMU 8×8×16, UK 440×215, AAC 600×200) for a wall from its area, with mortar and waste allowance.
Concrete Block Calculator
Blocks needed12.13 blocks per m² (1.127 per ft²)
Mortar bags (US, ~1 per 30 blocks)
16
Nominal sizes include the 10 mm / ⅜ in joint. Fill cores with grout where your design or code requires reinforcement.
Planning estimates only. Building codes, loads and material specs vary — have a licensed engineer or contractor confirm quantities and safety requirements. Disclaimer
Important
Quantity estimates for planning and ordering. Structural members, reinforcement and footings must be designed by a qualified engineer to local code.
Frequently asked questions
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