Free home, energy and garden calculators
Estimate costs, savings and quantities before you speak to a contractor. Every calculator works in your currency and units and explains its formula and assumptions.
- Renovation cost calculatorEstimate a budget by floor area, scope and type of work.Open calculator
- Solar savings calculatorEstimate yearly output and bill savings from a solar system.Open calculator
- Heat pump cost calculatorCompare installation and running costs with your current heating.Open calculator
- Insulation calculator (U-value)New U-value, thickness needed and yearly heating saving.Open calculator
- Electricity cost calculatorSee what any appliance costs to run per hour, month and year.Open calculator
- Roofing calculatorRoof area, pitch and the shingles or tiles to order.Open calculator
- Concrete calculatorConcrete for slabs, paths and posts — in cubic metres, yards or bags.Open calculator
- Area calculator (m² and ft²)Square metres or square feet for any room, floor or plot.Open calculator
- Tile & flooring calculatorTiles, boxes or flooring packs for any floor or wall.Open calculator
- Paint calculatorWork out how much paint you need for your walls and ceilings.Open calculator
- Lawn area calculatorMeasure your lawn and estimate seed, turf and topsoil.Open calculator
- Irrigation water calculatorEstimate how much water your garden needs through the season.Open calculator
- Decking calculatorDeck boards, joists, pads and screws for a timber or composite deck.Open calculator