Calculate exactly how many bags of cement — and the total cost — for a house, fence, or any structure in Nigeria. Covers foundation, blockwork, floor screed, and plastering.
Overall building outline — used for external walls, foundation, and floor screed.
Each room's perimeter is used to estimate internal partition wall length. Adjacent rooms share walls in reality, so use the blockwork mode below to correct for this.
Doors
Windows
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For a house, the building footprint (length × width) drives the external wall perimeter, foundation footing volume, and floor screed area. Rooms — entered individually or as a count with an average size — estimate internal partition wall length, since adjacent rooms share walls in reality, choose the blockwork mode that best matches your layout. Door and window areas are deducted from wall area before calculating blocks, mortar and plaster. Internal walls are plastered on both faces; external walls are plastered once inside and once outside, calculated separately. All cement quantities use standard Nigerian mix ratios — 1:2:4 for concrete (foundation, slabs), 1:6 for block mortar, and 1:3 for render/plaster.
Use our complete Estimator for a full cost breakdown and itemised Bill of Quantities — not just cement.