Mortar Mix Calculator
Estimate cement bags, sand volume, sand weight, and approximate material cost for common mortar mixes.
Open Mortar CalculatorCalculators
Construction calculators for quantities, materials, and early budget checks.
Use these dedicated calculator pages to sense-check quantities, surface coverage, material allowances, and early budget ranges before moving to a formal estimate.
Dedicated Calculator Pages
Open the right calculator for the job.
Every tool now has its own page, making it easier to bookmark, share, and return to the exact calculator you need.
Brick & Block Calculator
Estimate wall area, unit counts, mortar volume, and approximate material cost for brick or block walling.
Open Wall Calculator
Bathroom Renovation Calculator
Estimate an early bathroom budget range using floor area, finish level, complexity, contingency, and VAT.
Open Bathroom Calculator
Kitchen Renovation Calculator
Estimate an early kitchen budget range using floor area, finish level, complexity, contingency, and VAT.
Open Kitchen Calculator
Refurbishment Cost Calculator
Estimate an early refurbishment budget range where retained-building risk and contingency need quick review.
Open Refurbishment CalculatorExtension Cost Calculator
Estimate an early extension budget range using floor area, finish level, complexity, contingency, and VAT.
Open Extension CalculatorNew Build Cost Calculator
Estimate an early new build budget range using floor area, finish level, complexity, contingency, and VAT.
Open New Build CalculatorConcrete Volume Calculator
Estimate slab area, concrete volume, waste allowance, and approximate cost from length, width, depth, and a rate per m3.
Open Concrete CalculatorPlasterboard & Drylining Calculator
Estimate board counts, waste allowance, and approximate board cost from wall area, ceiling area, openings, and board type.
Open Drylining CalculatorScreed Calculator
Estimate floor screed volume, waste allowance, and approximate cost from floor area, thickness, and a rate per m3.
Open Screed CalculatorRender Calculator
Estimate render volume, waste allowance, and approximate cost from wall area, thickness, and a rate per m3.
Open Render CalculatorPainting & Decoration Calculator
Estimate paint quantities and approximate cost for walls, ceilings, doors, skirting, and external painted surfaces.
Open Painting CalculatorFoundations Calculator
Estimate concrete volume and approximate cost for strip foundations, trench fill foundations, and foundation slabs.
Open Foundations CalculatorPlastering Quantity Calculator
Estimate plaster volume, waste allowance, and approximate cost from wall area, ceiling area, openings, thickness, and a rate per m3.
Open Plastering CalculatorFloor Tiling Calculator
Estimate tile quantities, waste allowance, adhesive bags, and approximate cost from floor area, tile size, and rates.
Open Tiling CalculatorRoofing Area Calculator
Estimate roof surface area, waste allowance, and approximate cost from plan dimensions, roof pitch, and a rate per m2.
Open Roofing CalculatorDrainage & Pipe Bedding Calculator
Estimate bedding volume, surround volume, waste allowance, and approximate cost from trench dimensions and run length.
Open Drainage CalculatorSupport Guides
Need help using the calculators properly?
These guides cover the most common questions around calculator choice, waste allowances, rate checking, and knowing when a quick tool is no longer enough on its own.
How To Use Construction Calculators
Read the support guide covering calculator choice, inputs, waste allowances, rates, result checking, and when a formal estimate is the better route.
Read The GuideHow To Choose The Right Calculator
Use this guide if you want to match the right calculator to the real question, whether that is quantity, surface coverage, or early budget range.
Read The GuideHow To Set Waste Allowances
Use this guide if you want more confidence in the waste percentage before relying on a material or quantity result.
Read The GuideHow To Check Calculator Rates
Use this guide if you want to sense-check cost inputs before treating the calculator output as a useful planning figure.
Read The GuideCalculator Vs Formal Estimate
Use this guide if you want to know when a quick calculator is enough and when the project has moved into formal estimating territory.
Read The GuideNext Step
Need more than a quick calculator result?
Use the calculators as a first pass, then get in touch if you need measured quantities, formal estimating, or support for a live project or tender.