Horse Fence Calculator: Posts, Rails & Cost for Paddocks
Horse fencing should be tall, highly visible, and free of sharp edges. Wood post-and-rail is the classic choice. A common guideline is a top rail around 54 to 60 inches high, with 3 or 4 rails per section so horses cannot reach through or roll under.
Quick Calculator
Posts
103
Concrete
103
Rails Only
0
Rails
300
Est. Cost
$6,400–$12,000
Rails and spacing
Use 3 rails for calm horses in large pastures and 4 rails for paddocks, stallions, or young stock. Keep the bottom rail about 12–18 inches off the ground. Posts every 8 feet are standard; 10 feet is possible with heavier rails.
Avoid barbed wire
Barbed wire is a common cause of serious horse injuries. If you add wire, use smooth electric wire or electric tape on stand-off insulators along the inside of the top rail to stop leaning and chewing.
Large acreage math
A square 5-acre paddock is roughly 467 feet per side, about 1,870 feet in total. At 8-foot spacing that is about 235 posts, so line posts are where most of the money goes.
Example: 800 Feet of Post & Rail
A typical horse fence of 800 feet using post & rail fencing needs about 103 posts (including one gate) and 103 bags of concrete, with materials around $6,400–$12,000. Change the length and type in the calculator above to match your project.
Materials List – 800 ft of Post & Rail
| Material | Qty | Est. Cost |
|---|---|---|
| Fence Posts (4×4×6 ft) | 103 | $1,545 |
| Concrete Mix (60 lb bags) | 103 | $618 |
| Rails (2×4×8 ft) | 300 | $2,100 |
| Total Estimated Materials | $6,400 – $12,000 |
Other Fence Projects
Recommended Materials
Pressure-Treated Fence Post 4×4×8
Ground-contact rated, ideal for all fence types.
$12 – $18
Cedar Dog-Ear Picket 1×6×6
Naturally rot-resistant, smooth on one side.
$3 – $6
Quikrete 60 lb Fast-Setting Concrete
Sets in 20-40 minutes. No mixing required.
$5 – $7
Post Hole Digger – Fiberglass Handle
Heavy-duty clamshell digger for clean holes.
$35 – $55
Simpson Strong-Tie Fence Bracket
Galvanized L-bracket for rail-to-post connections.
$4 – $8
Decorative Post Cap 4×4
Copper-top cap, fits standard 4×4 posts.
$5 – $12