Fence Calculator for 120 Feet of Fencing
Planning a 120-foot fence? Below you'll find the exact materials you need—posts, pickets, concrete, and rails—plus estimated costs for every major fence type. Adjust the calculator to match your project.
Quick Calculator
Posts
18
Concrete
36
Pickets
384
Rails
45
Est. Cost
$1,800–$3,000
What You Need for 120 Feet of Fence
A 120-foot wood privacy fence (the most popular residential choice) requires 18 posts set every 8 feet, 36 bags of 60-pound fast-setting concrete, approximately 384 pickets (3.5-inch width with 1/4-inch gaps), and 45 horizontal rails. Material costs typically range from $1,800 to $3,000.
If you prefer a more affordable option, chain link fencing for 120 feet uses 15 posts with 10-foot spacing and 3 rolls of galvanized mesh, costing $960–$1,800. Vinyl panels offer a low-maintenance alternative at $2,400–$4,200 with 15 pre-assembled panels.
For a DIY project of this size, plan on roughly 2 days of work. Renting a two-person power auger ($50–$75/day) cuts digging time in half compared to a manual post hole digger.
Materials List – 120 ft of Wood Privacy
| Material | Qty | Est. Cost |
|---|---|---|
| Fence Posts (4×4×8 ft) | 18 | $270 |
| Concrete Mix (60 lb bags) | 36 | $216 |
| Rails (2×4×8 ft) | 45 | $315 |
| Pickets | 384 | $1,536 |
| Total Estimated Materials | $1,800 – $3,000 |
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