Block Calculator Nigeria — Sandcrete Blocks Needed
Calculate the number of sandcrete blocks needed to build walls in Nigeria. Get cost estimate, number of truck trips and total project budget.
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Total perimeter of all walls m
Standard: 3m for residential ₦
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Total Blocks Needed
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Estimated Block Cost
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Truck Trips Needed
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Net Wall Area
Calculation Breakdown
Blocks Per Layer Reference
A 9-inch block is 450mm wide and 225mm tall. Per square meter of wall you need approximately 10 blocks (9-inch) or 10 blocks (6-inch) — the standard formula is: blocks per sqm = 1 / (0.225 × 0.450) × mortar allowance ≈ 10 blocks/sqm.
Frequently Asked Questions
How many blocks does it take to build a 3-bedroom house in Nigeria?
A typical 3-bedroom bungalow in Nigeria requires approximately 2,500–3,500 blocks depending on wall height, design and number of openings. A storey building will require double that for the walls alone. Always add 5–10% for wastage and breakage during construction.
What is the standard Nigerian sandcrete block size?
The standard Nigerian sandcrete block is 450mm (length) × 225mm (height) × 225mm (width) for the 9-inch block, and 450mm × 225mm × 150mm for the 6-inch block. The 9-inch block is used for external walls while the 6-inch is used for internal partition walls.
How much does a sandcrete block cost in Nigeria?
As of 2026, 9-inch sandcrete blocks cost approximately ₦400–₦600 each depending on location and quality. 6-inch blocks cost ₦300–₦450 each. Prices vary between Lagos, Abuja and other states. Hollow blocks are slightly cheaper than solid blocks.
How many blocks are in one trip (truck) of blocks?
A standard tipper truck carries approximately 500–600 nine-inch blocks or 600–700 six-inch blocks per trip. A smaller pickup (Toyota Hilux) carries about 100–150 blocks. Always negotiate bulk prices when ordering multiple trips.
Do I deduct for doors and windows when calculating blocks?
Yes. Each standard door opening (900mm × 2100mm) saves approximately 9 blocks on a standard wall. A standard window (1200mm × 1200mm) saves approximately 8 blocks. This calculator automatically deducts for openings based on average sizes.