Quick answer
For early quantity planning, divide total run by the chosen maximum section spacing and round up to whole sections. Posts are then related to the section count, with extra posts often needed for gates, corners and layout changes.
Step by step
- Measure total run. Break separate fence lines into sections.
- Choose maximum spacing. Use the fence system or project specification.
- Round section count up. A partial section still needs support.
- Add special locations. Account for corners, gates, ends and transitions separately.
Formula or rule of thumb
Example
A 73 ft straight run with an 8 ft maximum planning spacing needs ceil(73 ÷ 8) = 10 sections before gate or corner adjustments.
Common mistakes
Do not treat a generic spacing rule as a structural design. Wind, fence height, material, soil, post size and local requirements can change actual spacing.
Planning note: product yields, installation methods, site conditions and local requirements can change the final quantity. Use the exact manufacturer or supplier information before purchasing.
FAQ
Is 8 ft spacing always correct?
No. It is common in some fence systems but not universal.
Do gates need extra posts?
Gates commonly need dedicated support posts or hardware-specific framing.
What about corners?
Corners and direction changes should be counted explicitly rather than hidden in a straight-run formula.