Home & Garden calculators
Home affordability, solar savings, paint, flooring, and improvement tools
11 calculators
Home projects fail on quantities and budgets more often than on skill. Too little paint means a second trip and a visible join, too little flooring after cutting waste means a different dye lot, and a renovation budget set without contingency runs out three-quarters of the way through.
These calculators include the allowances the trade uses, coverage rates, waste percentages, cut losses, and state them, so you can adjust for your own conditions rather than trusting a hidden fudge factor.
Start with these in Home & Garden
Paint CalculatorWork out how much paint, primer and ceiling paint a room needs from the spread rate on the tin, the number of coats and the wall surface, then round it up to real tin sizes.Home & GardenFlooring CalculatorWork out how many boxes of timber, laminate or vinyl plank flooring a room needs, with waste set by the laying pattern, the room shape and any pattern matching.Home & GardenHome Affordability CalculatorWork out the highest home price your income, debts, deposit and settlement cash actually support, using the 28/36 ratios lenders apply.Home & GardenSolar Panel Savings CalculatorModel rooftop solar payback the way it actually works: self-consumption at the retail rate, exports at a collapsed feed-in tariff, and panel degradation year by year.Home & GardenRenovation ROI CalculatorWork out how much of a renovation you get back at resale, allowing for the project type, the age of the work and the ceiling price in your street.Home & GardenMoving Cost EstimatorEstimate a local or interstate move from shipment weight, distance and service level, and compare doing it yourself against hiring a full-service carrier.Home & Garden
Every Home & Garden calculator
11 calculators
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- Moving Cost EstimatorEstimate a local or interstate move from shipment weight, distance and service level, and compare doing it yourself against hiring a full-service carrier.
- Mulch, Soil and Gravel CalculatorWork out how many cubic metres or yards of mulch, soil, gravel or sand a garden bed or path needs, and what it weighs.
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- Paint CalculatorWork out how much paint, primer and ceiling paint a room needs from the spread rate on the tin, the number of coats and the wall surface, then round it up to real tin sizes.
- Property Tax CalculatorEstimate annual and monthly US property tax from market value, assessment ratio, mill rate and exemptions, and project it forward under an assessment cap.
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- Renovation ROI CalculatorWork out how much of a renovation you get back at resale, allowing for the project type, the age of the work and the ceiling price in your street.
- Rent Split CalculatorSplit shared rent fairly by room size, by income, evenly or on a blend of size and income, and see every method side by side.
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- Solar Panel Savings CalculatorModel rooftop solar payback the way it actually works: self-consumption at the retail rate, exports at a collapsed feed-in tariff, and panel degradation year by year.
- Swimming Pool Volume CalculatorCalculate the volume of a rectangular, round or oval pool in litres and gallons, and the chlorine dose it needs.
Questions about home & garden calculators
- How much waste should I allow?
- Ten per cent is the usual starting point for flooring and tiling on a simple rectangular room laid square. Increase it to fifteen per cent for diagonal or herringbone layouts, patterned tile that needs matching, and rooms with many cuts around cabinetry or angles. Add a spare box regardless. It costs little now and is often impossible to match later.
- Do these use Australian or United States conventions?
- Materials tools accept both metric and imperial where it matters and say which units a result is in. Financial tools in this category that depend on national rules, such as property tax treatment and mortgage insurance, carry a region badge. Check it before applying the result locally, because the equivalent Australian cost is council rates and lenders mortgage insurance rather than the American structure.
- Is the solar payback figure realistic?
- It is only as realistic as the four inputs that drive it: your actual electricity rate, your feed-in tariff, the share of generation you use rather than export, and your system's real output after shading and orientation. Self-consumption is the one people get most wrong, and it moves the payback period by years. Use a recent bill and a site-specific quote rather than headline figures.