Short answer
A 75-foot privacy fence built with 5.5-inch dog-ear pickets and a 0.5-inch gap needs 150 pickets. That same fence requires 11 posts, 10 rails (16-foot stock), and 22 bags of 60 lb concrete. If you're asking how many pickets for a 75 foot privacy fence, 150 is your baseline order quantity before adding a 5% waste buffer.
How this calculator works
The picket count formula is straightforward: convert the fence length to inches, then divide by the combined width of one picket plus one gap.
The formula:
Pickets = CEIL( (fence length in ft × 12) ÷ (picket width in + gap in) )
For this variant:
CEIL( (75 × 12) ÷ (5.5 + 0.5) ) = CEIL( 900 ÷ 6 ) = CEIL(150) = 150
The ceiling function means any partial picket at the end of the run rounds up to a whole board — you can't buy a fraction of a picket.
What each input controls
Fence length (75 ft): The total linear run of fencing, measured along the ground. Measure string-line to string-line, not post center to post center. For runs with corners, add each straight segment separately, then sum them.
Picket width (5.5 in): The actual face width of the board, not the nominal size. A "1x6" dog-ear picket has a nominal 6-inch width but an actual face of 5.5 inches. Using the nominal number would undercount by about 8%.
Gap between pickets (0.5 in): The spacing left between adjacent picket faces. At 0.5 inches, a privacy fence has no sightlines while still allowing seasonal wood movement. Tighten to 0 for zero-gap; the count rises to 164. Widen to 1 inch for a more decorative spaced look; the count drops to 138.
Secondary outputs explained
11 posts: The calculator places posts every 8 feet and adds one for the far endpoint. At 75 feet, that's 9 full 8-foot spans plus one 3-foot terminal span — 10 spans, 11 posts. Gates and corners each need additional posts not counted here.
10 rails: A two-rail fence (top + bottom) over 75 feet uses 150 linear feet of rail. Dividing by 16-foot stock gives 9.375, which rounds up to 10 boards. Add rails for gates or any third center rail separately.
22 concrete bags: Two 60 lb bags per post hole is the standard for a 4×4 post in average soil. Rocky or sandy soils may need deeper holes, which means more concrete.
75 linear feet of pickets: The calculator confirms that 150 pickets × 0.5 ft each (6 inches combined pitch) equals exactly 75 feet of fence — a useful cross-check that the numbers are consistent.
Waste factor
The calculator flags a 5% waste factor. On 150 pickets that's 8 additional boards, bringing the recommended purchase to 158 pickets. Waste comes from: end cuts on the final panel, boards with bad knots or checks, and any pickets cracked during delivery or installation. Buy the extra. Returning 3–4 boards to the store is easier than making a mid-project hardware run.
Units note
All inputs are imperial. If your measurements are in metric, convert to feet and inches before entering them. A 23-meter fence, for example, is roughly 75.5 feet — the calculator rounds the picket count up automatically.
Recommended materials
For a standard residential privacy fence, most contractors reach for cedar dog-ears for the visible pickets — they're stable, light, and take stain or paint evenly. Posts go in the ground, so pressure-treated lumber is the right call there regardless of what you use above grade. Rails can be cedar or pressure-treated depending on exposure; a ground-level bottom rail in a wet climate will rot faster in untreated wood.
- Cedar dog-ear picket 5/8 in x 5-1/2 in x 6 ft
- Pressure-treated 4x4 in x 8 ft fence post
- Pressure-treated 2x4 in x 16 ft fence rail
- Quikrete fast-setting concrete (60 lb bag)
FAQ
How many pickets do I need for a 75-foot privacy fence? Using standard 5.5-inch dog-ear pickets with a 0.5-inch gap, you need 150 pickets. That works out to one picket every 6 inches of fence run. Add a 5% overage for cuts and rejects, which brings the purchase quantity to 158.
How many fence posts do I need for 75 feet? At 8-foot spacing, a 75-foot fence requires 11 posts — 10 spans plus 1 endpoint. If your yard has corners or a gate, add posts for each of those as well.
How many rails does a 75-foot fence need? A standard privacy fence uses two horizontal rails per section (top and bottom). With 16-foot rail stock, a 75-foot fence needs 10 boards. Some builders add a third center rail for taller or heavier panels.
How many concrete bags do I need to set 11 fence posts? Plan on 2 bags of 60 lb concrete per post hole, so 22 bags total for 11 posts. Fast-setting concrete lets you move on to rail installation the same day once it cures.
What is the right gap between privacy fence pickets? A 0.5-inch gap is standard for most privacy fences — it allows slight wood movement without leaving visible openings. If you want zero visibility, butt the pickets tight at 0 inches, which changes your count to 164 pickets for 75 feet.
Should I add a waste factor when buying pickets? Yes. A 5% waste factor is built into the calculator's recommended purchase quantity. On a 150-picket job that means buying 8 extra boards to cover splits, bad knots, and end cuts.
What picket width is most common for privacy fencing? The 5.5-inch nominal dog-ear picket (actual face width 5.5 in) is the industry standard. It's sold at every home center and lines up with 8-foot post spacing without awkward fractional cuts at the ends.
How tall is a standard privacy fence picket? Six feet is the most common height for residential privacy fencing. Some jurisdictions cap fence height at 6 feet without a permit, so check local codes before buying 8-foot pickets.
Can I use this calculator for a fence with a gate? The calculator counts pickets for the full linear footage. Subtract the gate opening (typically 3–4 feet) from your fence length before entering it, then add any pickets used to frame the gate panel separately.
Cedar or pressure-treated — which picket material is better? Cedar is naturally rot-resistant, lighter, and takes stain well, making it the top choice for privacy fences. Pressure-treated pine costs less and lasts longer in ground contact, but it's heavier and can warp more as it dries.
How do I handle a fence length that isn't a clean multiple of 8 feet? The calculator handles non-multiples automatically by ceiling the division — the last span is simply shorter. At 75 feet, the final span runs 3 feet, so the last section has about 6 pickets instead of 16.
How long does it take to install 150 fence pickets? An experienced two-person crew can hang 150 pickets in 4–6 hours once posts and rails are set. Add a full day for digging, setting, and curing the 11 posts before you start nailing boards.