Fencing Calculator

How to use the Fencing Calculator

1. Enter the total fence run length in metres.
2. Select the fence panel width (standard 1.83m / 6ft panels).
3. Choose whether you need gravel boards and end posts.
4. Review the total panels, posts, bags of postcrete, and gravel boards needed.

Why use this tool

• Accounts for the fact that you need one more post than the number of panels.
• Calculates postcrete or concrete quantities per post hole.
• Handles corner posts and end posts so the count is accurate for non-straight runs.

Fencing is one of the most common domestic projects and one of the easiest to mis-estimate. The classic mistake is ordering the same number of posts as panels — you always need one extra. This calculator works from the total run length, divides by panel width to get the number of panels, and adds the correct number of posts including ends and corners. Postcrete quantities are calculated per post based on standard 600mm-deep post holes. Gravel boards, clips, and fixings are listed separately so nothing is missed when placing your merchant order.

Part of Builder Tools Calculators — free construction tools for UK tradespeople.