Wood Fence Calculator for Pickets Posts Rails and Total Fence Cost

Equal-bay layout, style-aware picket counts & full hardware takeoff

Generated by QuickTonnage.com ·

ft

Include gate openings in this total they’re subtracted automatically below.

Bay lengths are auto-adjusted so every section is equal no odd short section at the end.

in

Board-on-board uses two overlapping layers — picket count is automatically increased ~30% to cover both layers.

in

No terrain adjustment needed on level ground.

Post length uses the standard rule of thumb: bury 1/3 of total post length, plus a 6″ gravel base below the post.

gates
ft

Openings over 5 ft are auto-treated as double (two-leaf) gates for hinge, latch & brace counts.

$
$
$
$

Total Pickets Needed

–pickets

Enter your fence details and calculate to see results.

Sections / Bays
–
Actual Bay Length
– ft
Total Posts
–
Recommended Post Length
– ft
Total Rails
–
Concrete Bags (80 lb)
–

Fastener Takeoff

Picket Fasteners
–
Rail-to-Post Brackets
–

Gate Hardware

Gate Posts
–
Cross-Braces
–
Hinges
–
Latch Sets
–
Total Material Cost $–
🪵
– Picket Bundles
Based on standard bundles of 24 pickets
🧱
– Concrete Pallets
Based on a standard 42-bag pallet of 80 lb mix
🔩
– Boxes of Exterior Screws
Based on ~100 screws per 5 lb box

Estimates are approximate and based on standard fence-building rules of thumb. Post length, concrete, hardware and gate takeoffs assume typical residential construction always confirm quantities, post embedment depth, and local frost-line requirements with your building code and supplier before ordering.

How to Use This Fence Calculator

Building a fence material list usually means a lot of manual math. QuickTonnage does it in six steps instead.

  1. Enter your total fence length and pick a post spacing 6 ft or 8 ft on-center. The calculator automatically spreads your posts into equal sections, so you don't end up with one short, awkward bay at the end of the run.
  2. Choose your fence height and picket style: dog-ear, board-on-board, shadowbox, or spaced picket.
  3. If your yard isn't flat, switch to racked or stepped terrain mode.
  4. Add any gate openings and their width.
  5. Enter your pricing for pickets, posts, rails, and concrete.
  6. Calculate. You'll get your full list pickets, posts, rails, fasteners, post-hole concrete bags, and gate hardware in one place.

How Many Fence Pickets, Posts & Rails Do You Need?

Every wood fence comes down to the same three questions: how many pickets, how many posts, and how many rails. Here's roughly what to expect.

Pickets depend on your fence length, picket width, and gap. As a rough example, a 100-foot fence built with standard 5.5″ pickets and a 1/8″ gap needs somewhere around 210 pickets before adding a waste allowance.

Posts are simpler, take your total fence length, divide by your post spacing, and add one. An 8-ft spacing on a 100-foot run works out to 13 sections, which means 14 posts.

Rails depend on fence height. A 4-ft fence typically uses 2 rails per section, a 6-ft privacy fence uses 3, and an 8-ft fence uses 4. That same 100-foot, 6-ft-tall fence needs 39 rails.

These are the exact numbers QuickTonnage's wood fence calculator works out for you automatically — along with post-hole concrete, fasteners, and gate hardware, so you're not doing separate math for each one.

Wood Fence Calculator FAQ

How many pickets do I need for 100 feet of fence?

For a standard 5.5″-wide dog-ear picket with a 1/8″ gap, expect roughly 210 pickets for 100 feet of fence, before adding a waste allowance for cuts and damaged boards.

How many fence posts do I need?

Divide your total fence length by your post spacing (usually 6 or 8 feet), then add one. A 100-foot fence at 8-foot spacing needs 14 posts.

How much gap should be between fence pickets?

For a standard picket fence, 1/8″ is typical. Privacy fences are often installed with little to no gap, while board-on-board styles use an intentional overlap instead of a gap.

How many bags of concrete does one fence post need?

It depends on post size and hole depth, not a flat number a wider hole or a taller post needs more concrete. QuickTonnage calculates this from your actual post length and post size instead of a rule-of-thumb guess.

How many rails does a 6-foot fence need per section?

Three rails per section is standard for a 6-foot privacy fence top, middle, and bottom.

What size are fence pickets?

Standard dog-ear pickets are usually 5.5″ wide, though 3.5″ and 7.25″ widths are also common. Board-on-board and shadowbox styles use the same widths but need more pickets to cover the same run.