Concrete, brickwork, roofing, framing, loft floors and material take-offs with full cost estimates.
Work out concrete volume in m³ or yd³ plus how many bags you need for any slab, footing or column.
Estimate only. Always get 2–3 quotes from local trades before committing.
Volume = Length × Width × Depth × (1 + waste%)
Estimate the number of bricks or blocks needed for any wall, including a waste allowance.
Estimate only. Always get 2–3 quotes from local trades before committing.
Convert roof pitch between rise/run, degrees and ratio. Get rafter length from span.
Angle = arctan(rise / run); Rafter = √(rise² + run²)
Calculate the weight of reinforcing steel bar from diameter and length.
Weight = (π/4 × d² × L × ρ) × N, ρ = 7850 kg/m³
Estimate the cost of laying a new floor in a loft conversion — chipboard, laminate or engineered oak — with materials, labour, joists and insulation.
Estimate only. Always get 2–3 quotes from local trades before committing.
Total = area × (material/m² + labour/m²) + optional insulation + optional new joists