Measure · estimate · create
Get the numbers right.
Get on with your project.
Plan materials, check costs and create useful documents. Every tool shows its assumptions. Your calculations run in your browser.
15 tools available
Tools for the task at hand
Concrete Calculator
Estimate ready-mix volume and bags for slabs, footings, walls, columns and stairs.
ConstructionSquare Footage Calculator
Measure rooms and shaped areas, subtract exclusions and estimate area-based costs.
ConstructionPaint Calculator
Estimate paint and primer from walls, rooms, openings and coats.
BusinessInvoice Generator
Create a clear invoice locally with line items, discounts, tax and print-ready output.
FinanceMortgage Calculator
Calculate principal-and-interest payments, extra payments and an amortisation schedule.
BusinessProfit Margin Calculator
Compare profit, margin and markup or calculate a price for a target margin.
EnergyBTU Calculator
Estimate room cooling capacity using explicit climate and room assumptions.
FinanceCompound Interest Calculator
Explore compounding, recurring contributions, timing and inflation.
BusinessBreak-Even Calculator
Find the sales volume needed to cover costs or reach a target profit.
ConstructionRoofing Calculator
Convert footprint and pitch into roof area, roofing squares and material quantities.
EnergySolar Savings Calculator
Model solar generation, self-consumption, exports, payback and long-term savings.
UtilitiesQR Code Generator
Create downloadable QR codes for links, text, Wi-Fi and contact information locally.
ConstructionTile Calculator
Estimate tiles, boxes and cost across multiple areas with waste and grout spacing.
ConstructionGravel Calculator
Estimate aggregate volume, mass, bags and cost using your material density.
ConstructionFlooring Calculator
Estimate flooring area, waste, boards, packs and purchase cost.