Fence Calculator

Estimate posts, rails, pickets and post concrete for a wood fence.

0 for a privacy fence.

Posts

21

  • Sections19
  • Rails (3 per section)57
  • Pickets328
  • Post-hole concrete (80 lb bags, 2 per post)42 bags

Estimates only. Round up when you order, and confirm structural details with your local building code.

How to use it

  1. Enter the total fence length and post spacing.
  2. Choose the height and picket size.
  3. Enter the number of gates.

The formula

Sections = length ÷ post spacing

Posts = sections + 1 + gates

Pickets = length ÷ (picket width + gap)

Worked example

Total fence length150 ft
Post spacing8 ft
Fence height6 ft
Picket width5.5 in
Gap between pickets0 in
Gates1

Result

Posts21
Sections19
Rails (3 per section)57
Pickets328
Post-hole concrete (80 lb bags, 2 per post)42 bags

Tips before you order

  • Corner and end posts take the most load — set them first and run a string line.
  • Check property lines and HOA rules before digging.

Questions

How many posts for a 150 ft fence?

At 8 ft spacing: 19 sections, 20 posts, plus one per gate.