Inputs
Results
| Item | Quantity | Units | Notes |
|---|---|---|---|
| Pickets (both layers) | 339 | each | Includes waste |
| Rail pieces | 40 | pieces | 8.00 ft each |
| Rails linear | 288.00 | ft | Run only (excludes gates) |
| Posts | 15 | each | Includes gate posts |
| Fasteners | 2033 | each | 2 per rail per picket |
| Concrete total | 20.453 | ft^3 | Hole Ø 10.00 in x 30.00 in |
| Bags of mix | 46 | 60 lb | 0.450 ft^3 per bag |
| Bays (run) | 12 | each | Between posts on run |
Quick figures
- Effective coverage per picket (one layer): 7.50 in
- Run length (excludes gates): 96.00 ft
- Pickets along run (both layers, before waste): 308
Formulas Used
Coverage per picket (inch):
coverage = picket_width + gap
- Pickets per layer along run:
ceil( run_length_ft × 12 / coverage_in ) - Total pickets along run (two layers):
2 × pickets_per_layer_run - Gate pickets: same as run, replacing
run_length_ftwith total gate span - Posts along run:
floor( run_length_ft / post_spacing_ft ) + 1, plus2 × gates - Rails linear footage:
rails_per_bay × run_length_ft; rail pieces= ceil( rails_linear_ft / rail_piece_len_ft ) - Fasteners:
pickets_total × rails_per_bay × fasteners_per_connection - Concrete volume per post (ft³):
π × (diam_ft/2)² × depth_ft; total bags= ceil( total_concrete_ft³ / bag_yield_ft³_per_bag ) - Waste factor: multiply key quantities by
(1 + waste_pct/100)and round up
Notes: This calculator assumes a two-layer board-on-board pattern with either spaced boards (gap method) or overlapping edges (overlap method) offset between layers. Local codes and supplier piece lengths may vary.
Example Data
| System | US |
|---|---|
| Fence length | 120 ft |
| Fence height | 6 ft |
| Picket width | 6 in |
| Mode | gap 1.5 in |
| Post spacing | 8 ft |
| Rails per bay | 3 |
| Standard rail piece | 8 ft |
| Gates | 1 @ 4 ft |
| Waste | 10% |
| Item | Qty | Units | Notes |
|---|---|---|---|
| Pickets (both layers) | 640 | each | Incl. waste |
| Rail pieces | 54 | pieces | 8 ft each |
| Posts | 18 | each | Includes gate posts |
| Fasteners | 3840 | each | 2 per rail per picket |
| Bags of mix | 36 | 60 lb | Hole Ø 10 in x 30 in |
Use your own measurements above and click Calculate to update the results table. Then export CSV or PDF.