Free Tools

Project Calculators

Free planning calculators for NZ home projects. Get quick estimates for materials and quantities.

Roof Area Calculator

Calculate your roof area from pitch angle and house dimensions.

Work out the wall area of a room for paint quantity estimates.

Estimate posts, rails, and palings needed for your fence.

Calculate cubic metres of concrete for slabs, driveways, and paths.

Work out floor area with wastage allowance for ordering materials.