Measure twice.
Price with confidence.
Practical calculators for the people who build. Plan quantities, understand your costs, and bring a clearer estimate to the job.
United Kingdom / GBPYour everyday toolkit
From the first takeoff to the final margin. Choose a tool, replace the example inputs, and see the maths.
15 Calculators
Labour Burden Calculator
Estimate your true hourly employee cost including employer payroll costs, benefits and paid non-working time.
Open calculatorJob Profit Margin Calculator
Estimate project profit, margin, markup and the selling price needed to reach your target margin.
Open calculatorOverhead Recovery Calculator
Calculate how much overhead your business must recover per billable hour.
Open calculatorEquipment Ownership Cost Calculator
Estimate equipment ownership and operating cost per productive machine hour.
Open calculatorContractor Break-Even Hourly Rate Calculator
Find the minimum billable hourly rate needed to cover labour and fixed overhead at your expected utilization.
Open calculatorContractor Markup vs Margin Calculator
Convert your cost and target gross margin into a selling price, markup percentage and estimated gross profit.
Open calculatorChange Order Pricing Calculator
Price extra work using direct costs, overhead allocation and a target profit margin.
Open calculatorRetention Cash Flow Calculator
Estimate withheld retention and immediate cash receipts from a contractor progress invoice.
Open calculatorContractor Bid Capacity Calculator
Estimate available project labour hours and the labour budget your team can support during a bid period.
Open calculatorConcrete Volume Calculator
Estimate slab volume, editable ready-mix cost and an overage allowance.
Open calculatorBrick Calculator
Estimate single-leaf brick quantities from wall area, openings, brick size and joint thickness.
Open calculatorPlasterboard Sheet Calculator
Estimate plasterboard sheets from measured area and editable sheet dimensions.
Open calculatorPaint Coverage Calculator
Estimate paint volume and an editable coating budget from area, coats and coverage.
Open calculatorFlooring Pack Calculator
Estimate flooring packs, purchase area and waste from your measured floor area.
Open calculatorRoofing Area Calculator
Estimate pitched roof area from a rectangular plan and an editable pitch angle.
Open calculatorSolid estimates start with open workings.
Every tool shows its assumptions and a worked example. Replace the inputs with your measured quantities, supplier quotes and job records. Example costs are editable scenarios, with no claim to be market prices.
See our methodology