Housing & Building Related Calculators

Handy Calculators to Help You Plan

Thinking of taking on a home project? Whether you're redoing your floors, putting up a fence, or just painting a room, planning makes a big difference. That’s where our free calculators come in. They help you figure out how much material you need, how much it might cost, and how to avoid wasting time or money.

From concrete and gravel to roofing and cladding, we’ve got tools to help you every step of the way. This page brings all our housing and building tools together to make your job easier—no maths headaches required.

Get Your Measurements Right from the Start

Before you build, dig, or cut, you need to know your numbers.

• The Square Footage Calculator helps you measure any room or outdoor space, so you can plan for flooring, paint, or tile.
• Laying down tile or vinyl? Use our Tile Calculator, Flooring Calculator, or Vinyl Cladding Calculator to figure out how much to buy.
• If you're building a fence or installing plasterboard, try our Fence Calculator or Plasterboard Calculator to get a quick material count.
• Want to add a deck? Our Decking Calculator can help with timber and board sizes.
• The Paint Calculator shows how many litres you'll need, whether you're brushing walls or ceilings.

Having the right numbers means fewer trips to the shop and less money spent on extras.

Materials That Match Your Plan

Every project needs the right materials—and the right amount of them.

• Pouring a slab or driveway? The Concrete Calculator, Cement Calculator, and Concrete Block Calculator help you buy the right mix.
• Adding a garden path or patio? Use the Paver Calculator, Gravel Calculator, or Sand Calculator to prep your base layers.
• Need landscaping stone? The River Rock Calculator and Crushed Stone Calculator make those piles easy to plan for.
• For warm homes, the Insulation Calculator helps you keep heat in and energy bills low.
• Building a strong base? The Foundation Calculator and Rebar Calculator are there for structural jobs.
• Starting a stone wall? The Brick Calculator or Retaining Wall Calculator can save you time and effort on brick and block counts.

With these tools, you'll know just what to buy—no overloading your vehicle with the wrong stuff.

Help with Roofs, Stairs, and Walls

Some parts of a home are trickier than others. These calculators make those tough areas simpler.

• The Roofing Calculator, Roof Shingle Calculator, and Roof Pitch Calculator help you estimate materials and angles for any roofing project.
• Figuring out stairs? The Stair Calculator gives you step-by-step numbers for safe, even steps.
• For cutting rafters, use the Rafter Length Calculator to avoid guesswork.
• Doing cladding or a new style like board and batten? Try the Cladding Calculator or Board and Batten Calculator.
• If you're redoing walls or installing panels, the Plywood Calculator can help with how many sheets to get.

These tools are here to make tricky measurements easy and stress-free.

Keep Things Comfortable Inside

A house isn't just about the outside. Inside comfort matters too.

• Heating or cooling a space? Use the BTU Calculator or HVAC Load Calculator to find the right unit size.
• Planning new carpet? The Carpet Calculator will help you figure out square footage and cost.
• Thinking about epoxy floors? Try the Epoxy Calculator to avoid mixing too little—or too much.
• The Grout Calculator gives quick answers when tiling backsplashes or floors.

These tools help you stay warm in winter, cool in summer, and cosy all year long.

Finish Your Space with the Right Look

Details matter. Whether it's paint, texture, or colour, small touches bring your space together.

• The Wallpaper Calculator gives a fast way to know how many rolls you’ll need.
• Trying different shades? Use the Colour Wheel Calculator, Colour Mixing Calculator, or Colour Palette Generator to test combinations.
• Need to match something specific? The Pantone Colour Finder helps you pick exact tones every time.
• If you're doing electrical work, the Box Fill Calculator ensures your outlets and junction boxes follow code.

Even the little things deserve good planning. These tools help your finished project look great.

Try any of our calculators today and take the guesswork out of your next home project.