How it works
A fence estimate comes down to three numbers: the distance around the field, the post spacing, and the number of strands. Barbed and woven wire usually need a post every 10–16 feet. High-tensile electric can span 30–50 feet or more between posts, which is why it's often the cheapest per mile.
How to use it
Enter the field's length and width, or the total length for odd shapes. Gate openings are subtracted from the wire. Each gate adds two posts that need bracing. Change spacing, strands and roll size to match what your farm store sells.
Reference chart
| Fence type | Typical post spacing | Typical strands | Common roll |
|---|---|---|---|
| Barbed wire | 10–16 ft | 3–5 | 1,320 ft (¼ mile) |
| Woven wire | 10–14 ft | 1 roll (+ barbed on top) | 330 ft |
| High-tensile electric | 30–50 ft | 3–5 | 4,000 ft |
| Polywire / tape | 30–50 ft | 1–3 | 656 ft (200 m) |
Frequently asked questions
How many fence posts do I need per 1,000 feet?
At 12-foot spacing, about 84 line posts per 1,000 feet, plus corner and gate posts. At 40-foot spacing for electric fence, about 25.
How far apart should fence posts be?
About 10–16 feet for barbed and woven wire, 30–50 feet for high-tensile electric, and closer on hills, curves and soft ground.
How many strands of wire do goats need?
Goats test fences. Woven wire, or 4–5 electric strands starting low to the ground, works better than 2–3 strands.
How much wire is in a roll of barbed wire?
A standard roll is 1,320 feet, a quarter mile. Always check the label, because some rolls are shorter.
Figures are typical values from university extension and breed-association guidance. Estimates only. Individual animals vary — confirm pregnancy and health questions with your veterinarian. Last reviewed 2026-09-18.