Fence Post Spacing Calculator
Calculate average panel/post spacing for fence panels from the fence run and number of panel spans.
How to use Fence Post Spacing Calculator
1. Enter Fence Run Length, Number of Panels. Use the matching measurement or purchase unit. 2. Enter panel spans, not post count. Six spans ordinarily have seven boundary positions in a single open run; the model does not subtract physical post widths. The model treats the usable run as a single line. Post widths, corners, slopes, gates, panel cuts and fixings need their own layout. 3. Select Calculate or press Enter to see average panel/post spacing. 4. Select Select Copy result to copy the answer, or Reset to clear the form.
Why use this tool?
Use this calculator to plan a straight fence run. The model treats the usable run as a single line. Post widths, corners, slopes, gates, panel cuts and fixings need their own layout.
How the calculation works
Average spacing = measured fence run ÷ whole panel count. Enter panel spans, not post count. Six spans ordinarily have seven boundary positions in a single open run; the model does not subtract physical post widths. The model treats the usable run as a single line. Post widths, corners, slopes, gates, panel cuts and fixings need their own layout. Counts and comparisons use exact entered decimals. Other dimensions display up to six decimal places, with scientific notation for smaller nonzero results. Input and result magnitudes are limited to 9,007,199,254,740,991. Currency uses the selected currency’s minor unit.
Example
Fence Panels example: A 12 m fence run divided into 6 panel spans has an average spacing of 2 m.
Practical tip
Measure the actual fence route and excluded gates. Check how panel widths and post widths contribute to the final run.
Frequently asked questions
What does this result include?
Enter panel spans, not post count. Six spans ordinarily have seven boundary positions in a single open run; the model does not subtract physical post widths.
Does this choose the right installation or allowance?
The model treats the usable run as a single line. Post widths, corners, slopes, gates, panel cuts and fixings need their own layout.
How should I interpret rounding and units?
Whole purchase counts round up and maximum fit counts round down using the entered decimals exactly. Other dimensions use up to six decimal places; smaller nonzero results use scientific notation. Currency rounds to its minor unit, with smaller positive costs labelled explicitly. Unit selectors describe the input unit; changing one does not convert entered values.