Fence Materials Calculator
Posts, rails, pickets, and optional concrete.
Fence Materials Calculator
Estimate a simple fence build from fence length, post spacing, picket width, gap, rails per bay, and waste allowance. Optional concrete-bag, fastener, and material-price fields help turn measurements into a practical shopping estimate.
Fence Inputs
Fence material planning guide
Fence estimates combine repeated parts: posts, rails, pickets or panels, fasteners, and sometimes concrete. The run length is only the starting point; post spacing, gate openings, corner treatment, and ground slope can all change the count.
Use this calculator for simple straight fence runs where you want a quick material list before pricing. Measure the actual fence line and separate gates, corners, and stepped sections before entering the main run.
Before ordering fence materials
- Check whether end posts, corner posts, and gate posts need different sizes.
- Confirm post spacing against wind exposure, fence height, and product guidance.
- Add allowance for cut rails, damaged pickets, and uneven ground.
- Keep concrete estimates separate when holes vary in diameter or depth.
Site checks
This calculator is for quantity planning only. Boundary rules, permits, utilities, easements, neighbor agreements, and structural requirements should be checked before installation.
Worked fence example
A 24 m fence with posts every 2.4 m needs 11 post positions before end, gate, or corner adjustments. If each bay uses two rails, the rail count starts at 20 rails, then changes if rail lengths are joined or cut differently.
Pickets are usually driven by width and gap. A small change in the gap can change the total picket count across a long run, so it is worth testing the spacing before buying. Add extra allowance for corners, damaged pickets, and gate framing.
Fence calculator FAQ
Does the gate opening remove posts too?
Gate openings reduce the fence length used for pickets and rails. It does not apply custom gate-post or corner-post overrides automatically.
Can I use this for concrete too?
Yes for a quick bags-per-post estimate. For bag-yield-based concrete math, use the dedicated concrete calculator as well.