How this calculator works
Route length divided by maximum post spacing determines the number of spans. An open route needs one more post than spans; a closed loop reuses its starting post. Reinforced end and corner posts replace line posts within that total. Wire runs, whole rolls, fasteners and optional hardware form an itemized budget. Footings subtract the circular post volume from the cylindrical hole. A single uniform route cannot locate every corner or gate, so add brace posts and other costs explicitly. Example prices and hardware counts are placeholders, not regional quotes or engineering requirements.
Formula
Spans = ceiling(route length/post spacing). Open posts = spans + 1; closed posts = spans. Wire length = route length × runs × (1 + allowance). Rolls = ceiling(wire length/roll length). Total cost = sum(item quantity × price).
Worked example
For a 100 m open route with 5 m spacing, use 21 route posts. With two reinforced posts at $20, 19 line posts at $10, four barbed runs from two $50 rolls and 84 fasteners at $1, the total is $414.
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Frequently asked questions
Does this choose a safe fence for my animals?
No. Wire height, spacing, post strength, bracing, energizer capacity and grounding depend on species, terrain and applicable guidance. Enter an established design.
Are corner and gate posts additional?
The reinforced count replaces route posts. Extra brace posts are added separately. Exclude gate openings from route length and add gate hardware under other cost.
Does this include tax or current labour rates?
Only the prices and labour you enter are included. Verify local material quotes, delivery, tax and site preparation before budgeting.