How do I calculate fence posts?

Subtract gate width from total fence length, divide the effective fence length by the target post spacing, round up to sections, then add one post.

How much waste should I add for fence materials?

Many planning estimates use 5% to 15% waste depending on layout, cuts, terrain, and material quality. Verify the final list before buying materials.

Free fence calculator

Fence Calculator

Estimate fence posts, sections, pickets, rails, and rough material quantities from total length, post spacing, gate width, picket size, and waste.

Use calculator Open mobile app page

Calculate fence materials

This web version gives a quick estimate. The iOS app adds deeper takeoff workflows, concrete bag estimates, and Pro totals.

16posts

15sections

250pickets

30rails

Need the field app?

Fence Material Estimator is built for on-site use with saved defaults, Pro takeoff workflows, concrete bag estimates, and price totals.

View Fence Material Estimator

Planning note

Results are estimates only. Confirm layout, local code, post depth, terrain, material specs, and supplier availability before purchasing materials or performing work.

Fence calculator FAQ

How are fence posts estimated?

Gate width is subtracted from total fence length. The remaining length is divided by post spacing and rounded up to sections, then one post is added.

Does this replace a final material order?

No. Use it for planning. Verify the final material list against the actual layout, local requirements, and supplier dimensions.