Calculated result
220pickets
Pickets to order
Formula
FEN-WOOD-001posts = floor(length ÷ spacing) + 1; pickets = ceil(length ÷ (picket width + gap) × (1 + waste))
13 posts
Posts to set
12 bays
Fence sections
36 rails
Rails to order
Fencing calculator
Fence calculator
Wood-fence posts, rails, pickets and post-hole concrete bags from run length and spacing.
By Feroz Sheikh · Formula FEN-WOOD-001 v1.0.0 · Tested formula
Formula
FEN-WOOD-001v1.0.0Project inputs
Enter your measurements. Switching units converts the same project, including coverage and unit rates. Package yields keep the unit printed beside each field.
Refine measurements and rates at any time. Your current values are included in the material-list PDF.
Planning estimate, not engineering advice. Confirm site measurements and product specifications. Calculation limits.
This calculator counts wood-fence posts, rails, pickets and post-hole bags from run length and spacing. Formula FEN-WOOD-001 v1.0.0. Gates and slope racks are extras. Drop the run into an estimate and a quote letter. It is a run takeoff, not a boundary-wall spec.
- Measure the fence run between the intended end posts.
- Enter post spacing, rails per bay and actual picket width plus gap.
- Confirm gate openings, corner posts, post depth and mix yield separately.
Size chart
Wood-fence run chart (8 ft O.C.)
Wood fence. Gates, slope racks and specialty infill are extras.
| Run | Primary | Check |
|---|---|---|
| 40 ft | 88 pickets | 6 posts |
| 60 ft | 132 pickets | 8 posts |
| 80 ft | 176 pickets | 11 posts |
| 100 ft | 220 pickets | 13 posts |
| 150 ft | 330 pickets | 19 posts |
Metric example — 30 m run. A 30 m wood-fence run at 2.4 m on center returns 217 pickets. Gates stay off this run.
Bags vs bulk. Stock lengths versus a field cut: posts and rails round to the stick you will buy. Gates stay off this run.
- Run takeoff. Posts = run ÷ spacing + 1. This is a wood-fence count, not a boundary survey or a wind-load design. Planning geometry only
Add your project costs
Enter supplier prices and any labour, equipment or delivery costs. Pick a currency — badges, inputs, and totals follow.
Costs use the post, panel, fabric, stain or cap rate you type. Construclytic does not fetch fence-yard prices. Gates and slope racks stay extras. For GCC projects, select QAR, AED, SAR, KWD, OMR or BHD and enter local supplier rates.
How this calculator works
A transparent fence calculator takeoff.
Feroz SheikhWritten by Feroz Sheikh · founder
This calculator places posts along a fence run, then counts rails, pickets and post-hole concrete bags while keeping picket waste visible.
A wood-fence run is posts, rails and pickets with the gap you typed. Construclytic does not hide the gate as a free deduction. Post-hole concrete stays on the companion bag tool so a 6 ft privacy run does not invent bag counts.
Worked example. Example: a 100 ft run at 8 ft post spacing uses 13 posts and 12 sections. Three rails per section need 36 rails. 5.5 in pickets with 0.5 in gaps need 220 pickets after 10% waste, plus 26 bags of post concrete at 2 bags each.
See the example inputs and calculated result
This separate example uses the calculator's starting values in imperial units. It stays unchanged when you edit the tool above. Example rates, yields and dimensions are assumptions, not recommendations for your project.
| Input | Example value |
|---|---|
| Fence length | 100 ft |
| Post spacing | 8 ft |
| Rails per section | 3 count |
| Picket width | 5.5 in |
| Picket gap | 0.5 in |
| Concrete bags per post | 2 bags / post |
| Waste factor | 10 % |
Example result: Pickets to order — 220 pickets.
posts = floor(length ÷ spacing) + 1; pickets = ceil(length ÷ (picket width + gap) × (1 + waste))
Use the labelled units above when reproducing this example. To work in metric, switch the calculator to Metric; applicable measurements are converted, while product-specific units remain labelled.
- 1. Measure the fence run between the intended end posts.
- 2. Enter post spacing, rails per bay and actual picket width plus gap.
- 3. Confirm gate openings, corner posts, post depth and mix yield separately.
Field notes that change the number
- Measure the run in the dirt, not from a GIS length. Corners and slope add posts.
- Picket gap is an input. Dog-ear 6 ft boards at 3½ in with a ⅜ in gap is a different count from a shadow-box.
- Gates, slope racks and racks on grade are extras. This cluster is a focused run takeoff, not a complete fence catalog.
Common mistakes
- Dividing run by post spacing and forgetting the extra end post.
- Assuming the gate opening still gets pickets.
- Using one bag-per-post default in sand without checking the hole volume.
Block and metal fences are common in Qatar; this wood-run tool is still a planning count. Do not treat it as a municipality boundary wall spec.
Need the broader workflow? Read the fencing planning guide.
How-to: How to plan a wood fence · How to fill fence and deck post holes · How to stain a wood fence
Questions
Questions about fence calculator
Are gates deducted?
No. Measure gate openings out of the picket run or lower the fence length before calculating.
Does this set post depth?
No. Frost line, soil and local requirements determine hole depth. The bag count is only a planning input.
How many fence posts for 100 feet?
A 100 ft wood-fence run at 8 ft on center returns 220 pickets. Gates and slope racks are extras.
Are gates deducted automatically?
No. Count gate openings as extras. This is a run takeoff.
What is the formula ID?
This fence calculator publishes formula FEN-WOOD-001, version 1.0.0. The ID stays on the result and on the estimate line.