Posts, rails and concrete for 75 ft
3 rails per section, 10-inch holes 24 inches deep, 50 lb fast-setting concrete.
| Post spacing | Posts | Sections | Rails | Concrete bags |
|---|---|---|---|---|
| 8 ft | 11 | 10 | 30 | 28 |
| 6 ft | 14 | 13 | 39 | 35 |
Pickets
- Privacy fence (5.5 in pickets, no gap): 164 pickets
- Picket fence (5.5 in pickets, 2.5 in gaps, 2 rails): 113 pickets and 20 rails
75 ft is roughly a side yard or one side of a typical backyard. Each gate replaces a section of pickets but needs its own sturdy posts — many builders use 4×6 or doubled posts at gates.
Concrete options
Each post hole takes about 0.92 cu ft of concrete: 2.5 bags of 50 lb fast-setting mix or 1.5 bags of 80 lb standard mix per post. For all 11 posts, buy about 28 bags of fast-setting or 17 bags of 80 lb mix.
The math
Common questions
How many posts for a 75 ft fence?
11 posts at 8 ft spacing, or 14 posts at 6 ft spacing.
How many pickets for 75 feet of fence?
164 pickets for a privacy fence with 5.5-inch pickets and no gaps.
How much concrete for a 75 ft fence?
About 28 bags of 50 lb fast-setting concrete or 17 bags of 80 lb mix, using 10-inch holes 24 inches deep.
Want the full method, tips and other sizes? See the fence calculator guide.