How Much Fence for a 100×100 Yard?
A 100 by 100 foot yard (10,000 sq ft) needs 400 feet of fence to enclose all four sides, or 300 feet if your house covers one 100-foot side.
Quick Calculator
Posts
41
Concrete
82
Pickets
960
Rails
114
Est. Cost
$4,500–$7,500
Fence Footage for a 100×100 Yard
The perimeter of a rectangle is 2 × (width + depth). For 100 × 100, that is 2 × 200 = 400 feet. Most backyard fences only run three sides because the house closes off the fourth: one 100-foot back line plus two 100-foot sides, or 300 feet. If your fence returns to the house partway along the side, measure that actual run instead.
For a wood privacy fence on three sides you'd buy about 41 posts, 82 bags of concrete, 114 rails, and 960 pickets. Enclosing all four sides raises that to 53 posts and 1,280 pickets.
Cost to Fence a 100×100 Yard by Type
| Fence type | Posts (3 sides) | 3 sides (300 ft) | 4 sides (400 ft) |
|---|---|---|---|
| Wood Privacy | 41 | $4,500–$7,500 | $6,000–$10,000 |
| Vinyl | 41 | $6,000–$10,500 | $8,000–$14,000 |
| Chain Link | 33 | $2,400–$4,500 | $3,200–$6,000 |
| Picket | 41 | $3,000–$5,400 | $4,000–$7,200 |
| Split Rail | 41 | $3,000–$5,400 | $4,000–$7,200 |
Material estimates with one walk gate. Professional installation typically adds $5–$15 per foot.
Other Yard Sizes
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