Calculators Browse A–Z Tax & Salary Property Guides

Tax year: 2026/27

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Estimates for guidance only, not financial advice. Check important figures with GOV.UK or HMRC.

Home & Garden Calculators

Driveways, patios, roofs, render, glass, blinds and solar panel costs.

Driveway Cost CalculatorEstimate a new driveway in tarmac, block paving, gravel, concrete or resin.Resin Driveway Cost CalculatorPrice a resin-bound driveway by area, base and edging.Resin Patio Cost CalculatorEstimate a resin-bound patio, including base and edging.Render Cost CalculatorCost to render your house by wall area, render type and scaffolding.Flat Roof Cost CalculatorReplacement cost for felt, EPDM rubber and GRP fibreglass roofs.Retaining Wall Cost CalculatorEstimate sleeper, block, gabion or concrete retaining walls.Glass Price CalculatorPrice and weight of cut-to-size glass by size, thickness and type.Blinds Cost CalculatorMade-to-measure blinds for every window, with fitting.Solar Panels CalculatorGeneration, bill savings, export income and payback for solar PV.Air Conditioning CalculatorFind the right air conditioner size in BTU for your room.ROI Calculator for Air Source Heat Pump with Solar PanelsSavings, payback and return from a heat pump with solar panels.Area Weighted U Value CalculationAverage U-value and fabric heat loss across walls, roof, floor and windows.False Ceiling CalculatorTiles, grid and wall angle for a suspended ceiling.Plaster Board CalculatorHow many plasterboard sheets, screws and tape you need.Slate Roof CalculatorSlates, battens and nails for a natural or fibre cement slate roof.