Free Building Calculators
These free tools take the guesswork out of planning a job. Work out the materials and rough costs you'll need, and check your measurements meet New Zealand building standards — all before you start, or before you give us a call. Just pick the calculator you need below and enter your numbers.
Decking materials calculator — Works out the timber, joists, bearers and fixings you'll need for your deck size.
Baluster spacing calculator — Even, code-compliant baluster gaps worked out for you — no gap a child could slip through.
Straight stairs calculator — Rise, run and step count for a straight flight that meets the building code.
Timber retaining wall calculator — Estimates the timber, posts and materials for a retaining wall built to spec.
Room construction calculator — Plan a room's framing — wall lengths, studs and materials — from your dimensions.
Single wall construction calculator — Studs, plates and timber for a single wall, worked out from its length.
Decking cost calculator — Get a rough cost for your deck, materials and all, before you commit.
