Home improvement calculators for Australia
Every tool uses square metres, AUD pricing fields and GST handling, with formulas that are documented and unit-tested.
Concrete & Masonry
Volume, slab, footing and masonry material calculators.
- Concrete Slab CalculatorEnter slab dimensions in metres and millimetres to get the cubic metres of pre-mixed concrete to order, with wastage and an optional GST-aware cost estimate.
- Concrete Volume CalculatorEnter your pour dimensions in metres and millimetres — rectangular slabs and footings or cylindrical post holes — to get the cubic metres of pre-mixed concrete to order, with wastage and an optional GST-aware cost estimate.
Flooring & Tile
Flooring, tile and underlay quantity and cost calculators.
- Tile CalculatorEnter your floor or wall dimensions in metres and your tile size in millimetres to get the tile and box count to buy, with grout joints and wastage included.
- Flooring CalculatorEnter your room dimensions in metres to get the square metres of flooring to buy and the number of boxes, with a wastage allowance for cuts and spares.
Painting & Walls
Paint coverage and wall finish calculators.
Walls & Insulation
Drywall, plasterboard, stud and insulation calculators.
Landscaping
Mulch, gravel, soil and outdoor material calculators.
- Mulch CalculatorEnter your garden bed dimensions in metres and the mulch depth in centimetres to get the volume in cubic metres and litres, plus a bag count if you're buying bagged mulch.
- Gravel CalculatorEnter the area dimensions in metres and the gravel depth in millimetres to get the cubic metres and tonnes to order, with wastage and an optional GST-aware cost estimate.
Decks & Fences
Decking, fence post and panel calculators.
- Fence CalculatorEnter your boundary length in metres to get the posts and fence bays to buy — works for timber paling fences and panel systems like Colorbond — with an optional GST-aware cost estimate.
- Decking CalculatorEnter your deck length and width in metres to get the number of decking boards and joists to buy — works for 90 mm and 140 mm timber boards and for composite systems.