Barbed wire & post planner

Total wire = length × strands × (1 + waste%). Multiplying by strand count is the step most estimates miss. Rolls = ceil(total / 1,320 ft), a standard ¼-mile roll. A 10% waste allowance covers wrap-offs at ends and corners, splices and re-tensioning.

Line posts = floor(length/spacing)+1; low-carbon wire spans 12–15 ft, high-tensile up to ~30 ft with stays. Staples/clips = line posts × strands (one per wire per post) — validated exactly against MU Extension G1193 (a 5-strand ¼-mile run ≈ 80 posts × 5 = 400 clips).

Cattle 4–5 (4-point), boundary/perimeter 4, horse or high-security 5–6. Barbed wire is not recommended for sheep and goats — use woven (field) fence, which is why that preset was removed.

1 mile (5,280 ft), 5 strands, 14 ft spacing, 10% waste: total = 5,280×5×1.10 = 29,040 ft → ceil(29,040/1,320) = 22 rolls; line posts = floor(5,280/14)+1 = 378; staples = 378×5 ≈ 1,890.

Every open end and corner needs a braced H-assembly (a second post + horizontal brace rail + diagonal brace wire), plus roughly double staples where the wire wraps and doubles back at terminals; wide spacing (>15 ft) needs stays/droppers. Straight or gently rolling terrain is assumed; gates and cattle guards are excluded.