Fencing · Project planning

Closeboard & Featheredge Fence Calculator

Plan metric featheredge boards with lap coverage, arris rails, gravel boards and capping. Enter actual post centres and stock dimensions.

By Alish Gautam, Software Developer · Updated · Calculation methodology

Start with the editable example below. Dimensions retain their physical size when units change. Region sets currency labels without converting currencies; confirm entered quotes after changing region.

Fence layout

Run length includes gate openings. Gate offset is measured from the run start. Corner and straight connections share the preceding end post.

Run 1
Basic settings
Editable wood-fence planning example. Use project or manufacturer limits.
Editable arithmetic example. Replace with your project or product specification.
Product settings
Product and system dimensions
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Choose none to omit displacement.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
Editable arithmetic example. Replace with your project or product specification.
QUIKRETE Concrete Mix No. 1101: 80 lb ≈ 0.60 ft³; 60 lb ≈ 0.45 ft³. Select custom for another bag or product.
Use the selected product’s yield. A larger nominal bag mass does not establish yield.
Optional supplier product name, chart revision or quote reference, saved in shared project state.
Advanced settings
Advanced planning settings
Connect the last run back to the first. All runs must form one connected perimeter.
Enter the combined post-face / bracket reduction per bay. Zero treats the equal bay spacing as the clear board field.
Planning allowance, not a code or industry requirement. Set zero to order the exact rounded takeoff.
Cost settings · GBP
Optional quote prices
Optional supplier quote in the selected currency. Blank omits cost.

Project takeoff

Whole packages round up. Allowance is separate from purchased surplus. Prices omit labor, delivery, tax and other items unless explicitly entered.

Total measured fence run
30 m
Gate openings
0 m
Net infill length
30 m
Maximum bay spacing
1.8 m
Infill bays
17
Physical posts
18
Net requirement
238 pieces
Allowance
23.8 pieces
Planned requirement
261.8 pieces
Unrounded package requirement
261.8
Boards / pickets to buy
262
Purchased coverage
262 pieces
Surplus beyond planned requirement
0.2 pieces

Supplier-ready material list

Specified fence / board height
1.8 m
line posts
16
end posts
2
corner posts
0
gate posts
0
Boards / pickets to buy
262
Rails to buy
57
Rail installed linear length
90 m
Fasteners before reserve
1,428
Gravel boards
17
Capping stock lengths
17
Concrete volume before allowance
546.173 L
Concrete bags including allowance
31
Geometry / layout breakdown
Dimensions use the selected measurement system.
RunInfill (m)BaysEqual spacing (m)
Run 130171.765
Infill span sketch. Shared supports appear in both spans; the physical post total above counts each once. Gate openings are omitted from infill.
Infill span elevationsSpan 1: Run 1 · 17 bays

Metric defaults are editable examples, not a British regulatory specification. Cutting, slope details and fixing schedules must match the selected system.

How it works

The first featheredge covers full width; remaining boards advance by width minus overlap. Rails and gravel boards follow bays; capping follows span stock lengths.

Assumptions and limitations

Metric defaults are editable examples, not a British regulatory specification. Cutting, slope details and fixing schedules must match the selected system.

Whole packages round upward after the chosen allowance. Physical geometry and purchase reserve are separate. Manufacturer and project specifications override editable examples; the selected region does not establish a local code requirement.

Sources and boundaries

QUIKRETE: Concrete Mix No. 1101 — SPEC-DATA

Open the source · No. 1101 SPEC-DATA · Reference checked 2026-10-04

Scope: Yield of the specified packaged mix

Used for: 80 lb approximate yield 0.60 ft³; 60 lb approximate yield 0.45 ft³.

Does not establish: All concrete products; Fast-setting mix equivalence.

Only verified 60/80 lb presets are offered; custom bag yield remains available.