Calculate the number of posts, length of wire, number of corners and gates, and total installed cost for your farm fencing project.
This calculator estimates material quantities and costs for four common fence types: barbed wire, electric, wood post-and-rail, and mesh. Enter fence length, type, post spacing, corners, gates, and labor factor to get a complete bill of materials and cost estimate.
A 1,000 m barbed wire fence with 4 m post spacing needs 250 line posts, 4,000 m of wire (4 strands), 4 corner posts, and 2 gates. Materials: 250×$8 + 4,000×$0.15 + 4×$25 + 2×$150 = $2,000 + $600 + $100 + $300 = $3,000. With 50% labor = $4,500 total = $4.50/m. Compare to electric at $2.15/m — much cheaper for rotational grazing.
✓ Expert Reviewed: This calculator and its content have been reviewed by agricultural experts. Formulas are based on NRC, FAO, and university extension recommendations. For site-specific advice, consult your local agronomist or veterinarian.
Enter fence length in meters, select fence type, enter post spacing, number of corners, number of gates, and labor cost percentage. Click Calculate for quantities and total cost.
The Fencing Calculator helps budget farm fencing projects. Proper fencing is essential for livestock management, rotational grazing, predator exclusion, and property definition. Extension services provide regional material pricing and installation guidelines.
Line posts = length ÷ spacing. Wire = length × strands (barbed 4, electric 3, wood 3 rails, mesh 2). Materials = posts×cost + wire×cost + corners×cost + gates×cost. Total = materials × (1 + labor%). Cost per meter = total ÷ length.
1,000 m barbed wire, 4 m spacing: 250 posts. Wire = 4,000 m. Materials = $2,000 + $600 + $100 + $300 = $3,000. Labor 50% = $1,500. Total = $4,500 = $4.50/m. Same length electric: 250×$5 + 3,000×$0.08 + 4×$15 + 2×$120 = $1,250+$240+$60+$240 = $1,790 × 1.5 = $2,685 = $2.69/m.
Common mistakes: underestimating labor (typically 50-100% of materials), forgetting corner/brace assemblies (critical for tension), not budgeting for gates and water crossings. Tip: buy extra wire (10% waste allowance). Use quality corner posts — fence failure usually starts at corners. Check local extension for recommended post spacing by soil type.
Prices per installed meter: barbed wire $3-6/m, electric $1.50-3/m, wood rail $15-30/m, mesh $5-10/m. Costs vary by region, terrain, and material availability. Labor typically equals 50-100% of material cost. For rotational grazing, electric fencing is most cost-effective at $1.50-3/m installed.
Post spacing: barbed wire 3-5 m, electric 4-6 m (or 10-12 m with high-tensile), wood rail 2.5-3 m, mesh 3-4 m. Corner and end posts must be larger (15-20 cm diameter) with brace assemblies. In soft/wet soil, reduce spacing by 30%. Extension services recommend specific spacing based on soil type and animal pressure.
Minimum: one gate per paddock plus access gates. For rotational grazing with N paddocks, you need N internal gates or use portable electric wire. Budget $100-300 per gate. Driveway gates for equipment access should be 4-5 m wide. Cattle gates 3-3.5 m. Consider: where do animals need to go? Plan water access too.
Goats require: woven wire/mesh (4-inch squares) at least 1.2 m high, or 4-5 strand electric. Barbed wire alone won't hold goats (they squeeze through). Goats are smart and will test weak spots. Use electric offset wires to prevent climbing. Mesh with 10×10 cm openings is standard for goats. Extension recommends minimum 1.2 m height.
Rates: one person can install 100-200 m of electric fencing per day. Barbed wire: 50-100 m/day with 2 people. Wood rail: 20-30 m/day. For a 1,000 m project: electric ~1 week (1 person), barbed wire ~10-15 days (2 people), wood rail ~1 month (2 people). Use post hole digger or auger to speed up. Check weather schedule.