Fence calculator
Plan a straight fence run, excluding gate openings. Enter the length, post spacing, and rails per section to estimate posts and no-gap pickets, then prepare a purchase PDF.
Start with your measurements
Size up your project
Example values are filled in. Replace them with your project measurements.
One straight run with no corners. Gate openings are excluded from length; extra gate or corner posts need a layout.
Before you order
- Confirm fence layout, gate/corner posts and picket gaps.
- Size concrete from the actual hole and post dimensions.
Quantities to confirm
Fence purchase sheet
- Fence postsRound up run length / spacing, then add one end post.
- 14posts
- Fence rails3 per section. Confirm rail length and size.
- 39rails
- 5.5 in pickets5.5 in faces, no gaps. Uses actual length including the partial end section.
- 219pickets
- Post concrete allowanceAssumes two 50 lb bags per post. Verify actual hole volume and bag yield.
- 28bags
- Gate hardware allowanceHardware only; extra gate-support posts are not included.
- 1sets
What this estimate assumes
- One straight run, excluding gate openings. Corners, closed loops, picket gaps and extra cut waste are not inferred. Confirm footing design, product sizes and layout before ordering.
Name your project & add notes Optional
Includes your quantities, assumptions and space to record the supplier, confirmed quantity, quote and delivery. No account required.
How to check this list before buyingCheck the layout behind the quantities
The initial 100 ft run uses 13 sections, 14 posts, and 39 rails at three rails per section. Pickets cover the actual 100 ft length: 1,200 inches ÷ 5.5 inches rounds up to 219 pickets with no gaps. The final section may be shorter.
Gate openings, corners, closed loops, additional gate-support posts, and picket gaps are not inferred. The gate count only adds a hardware allowance. Post concrete is also a rough allowance; determine hole volume and product yield separately.
Confirm the design, post and rail sizes, local requirements, and utility-location process for your site. Record those choices and any additional materials on the purchase sheet.