Free tools
Free DIY tools
Quick answers before you start a job. No sign-up, nothing to install.
DIY or tradie? Legality checkerPick your state and the job to see whether you can legally do it yourself or need a licensed electrician, plumber or gasfitter, with the regulator that says so.Open →Bathroom floor calculatorTiles, adhesive, grout, waterproofing membrane, primer and silicone for your exact room, with wastage included.Open →Unit converter (inches to cm & more)Inches to cm and mm, including fractions like 3/8 inch, feet to metres, square feet to m², gallons to litres, pounds to kg.Open →Paint calculatorHow many litres for your walls and ceiling, allowing for doors, windows and coats, and which tin sizes to buy.Open →Concrete calculatorCubic metres and 20 kg bags for slabs, footings and post holes, plus when a premix truck makes more sense.Open →Soil, mulch & gravel calculatorCubic metres, tonnes and bags of soil, mulch, gravel, sand or road base for your area and depth.Open →Fence calculatorPalings, rails, posts, concrete and nails for a timber paling fence, butted or lapped and capped.Open →Wall tile calculatorTiles, boxes, adhesive, grout and trim for splashbacks, showers and feature walls.Open →Plasterboard calculatorSheets for walls and ceilings in every standard length, plus screws, joint tape and cornice.Open →Decking calculatorLineal metres, boards to buy, joists and decking screws for your deck size.Open →Stair calculatorNumber of steps, riser and going sizes, run and stringer length, checked against the NCC rules.Open →Roof pitch calculatorConvert degrees, x:12 ratio and percent, and turn a plan area into real roof area.Open →Home maintenance plannerTick what your home has and get a printable schedule of what to check, clean and service, and how often.Open →