Foundation Concrete Calculator — Footings and Cost 2026

The concrete volume for footings is found by multiplying the footing perimeter (in metres) by the cross-section width and height (in metres). For a 40 m perimeter and a 40 × 40 cm footing: 40 × 0.4 × 0.4 = 6.4 m³. It is worth adding about 5% for losses and uneven trench bottoms.

Ready-mix concrete of class C16/20 or C20/25 with pump delivery in Poland (2026) costs roughly PLN 300–450/m³, depending on region, class and delivery distance. A concrete pump adds roughly PLN 800–1,500 per visit. The calculator defaults to PLN 350/m³.

For a single-family house a typical strip footing is 40–60 cm wide and 30–50 cm high. Width depends on loads and soil bearing capacity, while height is usually at least 40 cm. Exact dimensions should follow from the structural design and geotechnical survey.

The cost of footing reinforcement (ribbed bars + stirrups + rebar labour) is roughly PLN 60–120 per running metre of footing. The calculator uses an average of PLN 80/m. The final cost depends on bar diameter, stirrup spacing and steel prices.

Strip footings for single-family houses usually use class C16/20 (B20) or C20/25 (B25) concrete. In aggressive soils or with a high water table, watertight concrete (W6–W8) with increased resistance is recommended. The concrete class is specified by the designer in the structural design.

Strip footings must reach below the soil frost line, which in Poland ranges from 0.8 m (west) to 1.4 m (north-east and mountains). Founding above this depth risks frost heave from freezing water. The depth is set by the design based on the climate zone.

No — the calculator covers strip footings (linear foundations under walls). A foundation slab is a different type, where volume is area × slab thickness. For a slab, use a concrete volume calculator based on surface area and thickness.

Add 5–10% to the calculated volume for uneven trench bottoms, pumping losses and possible footing widening at corners. Ready-mix concrete is usually ordered in whole cubic metres or rounded up, so it is worth planning delivery with a small reserve.

Usually not. The price per m³ of ready-mix concrete covers the material and mixer transport, but a concrete pump, long-distance delivery and work in difficult conditions are charged separately. When ordering, ask for the total cost including pumping to avoid underestimating.

No. Results are indicative and serve for a preliminary estimate of concrete quantity and cost. Foundation dimensions, concrete class and reinforcement must be set by a qualified structural designer based on the building design and geotechnical ground survey. This is critical for building safety.