What it calculates
Estimate posts, sections and rails from fence length.
Fence Material Calculator
Estimate fence posts, sections and rails from total fence length.
Planning and estimating aid only. Verify project requirements, manufacturer instructions, adopted codes, permits, and field conditions before performing regulated work.
Landscape estimating
How to Use This Calculator
Use the field units shown below, then compare your result with the worked example. Adding separate runs can double-count a shared corner post.
How the calculation works
Fence length is divided by post spacing to estimate sections; posts and rails are then calculated from those sections.
What the result means
Corners, gates, terminal posts, grade changes and bracing require additional materials.
Count one straight run with shared end posts
For one straight 100-foot run with a maximum planning spacing of 8 feet, the tool rounds 100 ÷ 8 up to 13 sections. It adds one end post for 14 posts and, at 3 rails per section, counts 39 rails.
Contractor tip: Adding separate runs can double-count a shared corner post. Draw the fence route and gates before turning the count into an order; verify final product spacing and local requirements.
Verify the final quantity
This model describes one straight run. Corners, gates, multiple separate runs, terrain and different panel lengths change the layout. It does not determine structural spacing or post foundations.
Good practice: Compare the calculated quantity with plans, specifications, product packaging and current field conditions before purchasing material.