Decking calculator
Boards, joists and screws for a deck. Metric, updates as you type. An estimate to plan with and to describe the job — not a cut list or a quote.
the way the boards run
Estimate
Deck area24 m²
Decking boards28 rows of 140 mm boards, 10% waste184.8 lineal m
Joists4 m long at 450 mm centres14
Decking screws2 per board per joistabout 800
Estimated installed costsupply and labour, incl. GST · new deck$9,600–$14,500
Refine this estimate →Assumes 140 mm boards with 5 mm gaps; 10% waste on boards; joists at 450 mm centres; bearers, posts and footings not included. An estimate for planning and for describing the job, not a cut list or a quote.
What does the whole job cost? See decking prices in the cost guide.
Other calculators
Concrete slab · Paint · Fence · Tile and flooring · Plasterboard (Gib) · Retaining wall