How Many Pickets Do I Need for a 6 ft Privacy Fence?

The short answer: one picket per 102 mm of run

For a 6 ft privacy fence built from 89 mm (3.5 in) pickets with a 13 mm (0.5 in) gap, each picket plus its gap covers 102 mm (4 in) of fence line. That means you need one picket for every 102 mm of run, or about 9.8 pickets per metre (3 pickets per foot). A 30.5 m (100 ft) run therefore needs roughly 300 pickets before you add waste. Confirm the picket width and gap with your supplier before ordering, because nominal sizes vary between manufacturers and a few millimetres changes the total on a long run.

The arithmetic is simple: picket count equals total run divided by (picket width plus gap). Keep every measurement in the same unit. In the US, most homeowners measure the run in feet and buy pickets by the piece, so convert the 102 mm module to 4 in and divide the footage by 4. The fence calculator does this conversion for you and rounds up to a whole picket, so you never order a partial board.

Measure the run, not the yard

Walk the fence line with a tape and record each straight section separately, corner to corner. Do not measure the property boundary from a plot plan; measure where the posts will actually sit. Add up the sections to get total linear footage. Note every gate opening and subtract its width from the run, because gates are built as separate units and are not counted as picket field.

Also record the number of corners and ends. Each corner post and end post terminates a run, and the calculator uses these to place posts at 2.44 m (8 ft) spacing. If your total run is not an exact multiple of 8 ft, the last bay is shorter, which slightly changes the picket count in that bay. Round the run up to the nearest whole foot when you measure, and tell your supplier if any section is shorter than 2.44 m (8 ft).

Worked example: a 30.5 m (100 ft) run

Take a straight 30.5 m (100 ft) run with one 1.07 m (3.5 ft) gate. Subtract the gate: 100 minus 3.5 equals 96.5 ft of picket field. Divide by 4 in per picket: 96.5 times 12 equals 1,158 in, divided by 4 equals 289.5 pickets, rounded up to 290 pickets for the field. Add a 10 percent waste allowance for trimming, defects and short bays: 290 times 1.10 equals 319 pickets. Order 320 to be safe.

Now check the frame. At 2.44 m (8 ft) post spacing, a 100 ft run needs 13 posts (12 bays plus one). With 2 rails per bay, that is 24 rails, plus rails for the gate frame. Each 254 mm by 762 mm post hole holds about 0.039 m³ of concrete, and an 80 lb bag yields about 0.017 m³, so allow 3 bags per post, or 39 bags for 13 posts. The calculator returns these figures alongside the picket count so your order list is complete in one pass.

Why the calculator adds waste and rounds up

The calculator does not simply divide the run by the module. It rounds the picket count up to a whole number, because suppliers sell whole pickets, and it applies a waste factor so you are not short when a board splits or a bay needs a ripped picket. It also separates gate widths from the picket field, so gate pickets are counted with the gate rather than the run. That is why its number can sit slightly above your hand calculation.

The output assumes 2.44 m (8 ft) post spacing and 2 rails per bay, matching the default 6 ft privacy fence. If your local code or homeowners association requires closer posts or a third rail, the post, rail and concrete figures change while the picket count stays the same. Check post depth and footing requirements with your local building department before digging.

Turning the count into an order

Group the order by component: pickets, posts, rails, concrete bags and gate hardware. Add 5 to 10 percent to pickets and rails, and one spare post. Confirm current lead times and picket dimensions with your lumber yard, since delivery schedules and stock widths vary by region and season. Prices are not fixed, so get a written quote before committing.

If you are building in stages, order the pickets for one section at a time using the same module, and keep the offcuts. Store pickets flat and covered so they do not warp before installation. For the exact figure on your own run, enter the measured footage and gate widths into the fence calculator and use its picket, post, rail and concrete totals as your shopping list.

Check before you buy

Picket width is the number most likely to be wrong. An 89 mm picket is often sold as a 1x4 or similar nominal size, and the actual face width can differ by a few millimetres. Measure a sample board and recalculate the module as width plus gap. A 3 mm difference on a 100 ft run moves the count by several pickets.

Also confirm the maximum gap your local code allows for a privacy fence, and whether a permit is required. Rules differ by state, county and city, so ask your local building department. Your supplier can confirm picket dimensions, bag yield and delivery times. Neither the calculator nor this guide replaces those checks.

Frequently asked questions

How many pickets do I need for a 6 ft privacy fence? Divide the picket field footage by 4 in, then add 10 percent. For 100 ft of field that is about 290 pickets, or 320 with waste. Subtract gate openings first and confirm your picket width with the supplier.

Does a 6 ft height change the picket count? No. Height affects post length and embedment, not the number of pickets along the run. A 6 ft fence uses the same 102 mm module as a shorter fence, provided the picket width and gap stay the same.

How many pickets are in an 8 ft panel? At 102 mm per picket plus gap, an 8 ft bay holds about 24 pickets. If you buy pre-assembled panels, count panels instead and confirm the panel width with the supplier.

How much concrete do I need per post? A 254 mm by 762 mm hole takes about 0.039 m³, roughly 3 bags of 80 lb concrete at 0.017 m³ per bag. Confirm bag yield on the label and check footing depth with your local building department.