Fence Post Spacing Calculator

Work out how many posts a fence run needs and the even centre-to-centre spacing between them, given your maximum span.

Read the guide: Fence Post Spacing: How Far Apart Should Posts Be?

Post spacing

Posts needed

14

13 sections, spaced evenly

Sections
13
Even spacing
7.69 ft

Setting posts 7.69 ft apart keeps every section the same width, no narrow last bay. Stay within the panel or rail length you are buying.

Counts the run end to end. Corners, gates and step-downs may need an extra post each.

How it works

  1. 1

    Enter the length

    Add the run length, in feet or metres.

  2. 2

    Set the max spacing

    Enter the widest spacing you want, 8 ft is typical for wood, up to 10 ft for chain link.

  3. 3

    Read the layout

    See the post count and the exact even spacing it works out to.

Instant & 100% private — nothing is uploaded

Every calculation runs locally in your browser. The income, balances and goals you enter stay on your own device and are never sent to a server — nothing is stored, logged or shared.

Frequently asked questions

How many posts do I need?
Divide the run by your maximum spacing and round up to get the sections, then add one for the closing post. The calculator does this and shows the even spacing it lands on.
What spacing is best?
Closer posts make a stiffer fence. Wood and vinyl usually sit 6 to 8 ft apart; chain link can stretch to 10 ft. Stay within the panel or rail length you are buying.
Is my fence design sent anywhere?
No. Everything runs in your browser. The layout, lengths and prices you enter stay on your device, nothing is uploaded, logged or stored, and it all clears when you close the tab.
Do I need an account?
No. There is no sign-up, no email and no paywall. Open the tool and start, it is free and unlimited.