Fence Calculator
Calculate materials for timber paling, Colorbond, or pool fences. Get posts, palings, rails, and concrete bag counts. No sign-up, no ads.
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Estimate only. Actual quantities depend on terrain, gate sizes, and material specifications. Check local council requirements and confirm with your fencer or supplier before ordering.
Fence Type
Fence Dimensions
Each gate adds 2 extra posts
Timber Options
25mm lapped, 0mm butted
Standard is 3 rails (top, middle, bottom)
Concrete
1.5 bags per post is typical for 600mm depth
Material Summary
Total concrete bags (20kg)
0
Posts set 600mm in ground. Add 10% to material quantities for waste and cuts.
Three simple steps
Select your fence type and enter the total length
Choose timber paling, Colorbond, pool fence, or custom. Defaults are pre-filled for each type.
Adjust height, post spacing, and material options
Fine-tune paling width, gap, rails per bay, or panel size to match your build.
Get complete material quantities including concrete for posts
See posts, palings or panels, rails, and total concrete bags instantly.
Tips for your fence build
Set posts 600mm deep
Standard depth for 1.8m fences. Pool fences and retaining walls may need deeper footings. The rule of thumb is one-third of the total post length underground.
Check boundary lines
Get a survey if you are unsure where the boundary sits. Building on your neighbour's land creates legal headaches and can mean tearing down a brand new fence.
Council approval
Most fences under 2m don't need approval, but pool fences and front fences often do. Check your local council requirements before you start digging.
Frequently asked questions
How deep should fence posts be set?
The standard depth for a 1.8m fence is 600mm. A common rule of thumb is one-third of the total post length underground. Pool fences may require specific depths per Australian Standard AS1926.1. Retaining walls and fences on slopes may also need deeper footings — consult a structural engineer if you are unsure.
What's the standard post spacing for Colorbond?
The standard post spacing for Colorbond fencing is 2.38 metres, which matches the standard panel width. Using wider spacing increases wind load risk and is not recommended by most manufacturers. Always check your specific panel supplier's specifications before ordering.
How does timber compare to Colorbond fencing?
Here is a quick comparison:
- Timber: $75–120/m installed, 15–20 year lifespan with regular staining or painting every 2–3 years.
- Colorbond: $85–150/m installed, 20–30 year lifespan, very low maintenance.
Colorbond is the better choice for bushfire-prone zones (BAL ratings) and coastal areas where salt air accelerates timber deterioration.
Do I need council approval for a fence?
- Under 2m: Usually does not require council approval in most states.
- Pool fences: Always need certification per Australian Standard AS1926.1.
- Front fences: Check your local council — many have height and style restrictions.
- Dividing fences: Talk to your neighbour first. Dividing fence legislation varies by state.
How many palings per metre of fence?
With standard 65mm wide palings and a 25mm gap (lapped), you need approximately 11 palings per metre of fence. For butted palings (no gap), you need approximately 15 palings per metre. The exact count depends on your paling width and gap — this calculator handles that automatically based on your inputs.
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Use CalculatorDisclaimer: This calculator provides estimates only and is intended as a general guide. Actual material quantities may vary based on site conditions, terrain, gate sizes, and material specifications. Council and pool fence regulations vary by area. Always confirm quantities with your fencer or supplier and check local council requirements before starting work. Devalo does not accept liability for any loss or damage arising from the use of this calculator.
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