Carport Calculator
Estimate carport post count, bearer length and roof area from carport dimensions, post spacing and roof pitch.
Estimate only — not a substitute for a licensed tradesperson, a certified engineer, or sign-off from your local building surveyor. Verify against current standards and site conditions before ordering materials or starting work.
Result
- Posts required
- 6
- Post material (total lineal m)
- 14.4m
- Bearer material (total lineal m)
- 12m
- True roof area
- 43.73m²
- Roof material to order (incl. waste)
- 48.1m²
Post count assumes a post at both ends of each long side plus evenly spaced posts no wider apart than your spacing input (so the actual spacing achieved is usually a little tighter than what you entered, never wider).
Quantity take-off only - post count, bearer length and roof area/material from the dimensions you enter. Post/bearer SIZING, footing depth and wind classification are governed by AS 1684 (timber framing) or AS 4600 (steel), AS 4055 (wind classification) and AS 2870 (footings/site classification) - deliberately not attempted here. Most councils require a building approval, complying development certificate, or an exemption check for a carport - confirm before you build.
What this is based on
Quantity take-off only - post count, bearer length and roof area from the dimensions you enter. Actual post/bearer SIZING, footing depth and wind classification are governed by AS 1684 (timber framing) or AS 4600 (steel), AS 4055 (wind classification) and AS 2870 (footings/site classification), and in most councils a carport needs a building approval, complying development certificate, or an exemption check. This calculator must not be used as a design tool - get sizing from an engineer, the manufacturer's span tables, or your certifier.
We cite the clause and link to the publisher so you can read the source yourself. We do not reproduce the text or tables of the NCC or of any Australian Standard.