Construction/Home calculator

Fence / Post Calculator

Estimate fence posts from total fence length and spacing.

FormulaPosts = floor(length / spacing) + 1

Formula

Post count formula

Posts = floor(length / spacing) + 1

100 ft at 8 ft spacing needs about 13 posts.

FAQ5 common questions for this calculator.

FAQs

Does this include corner posts?+

The estimate counts posts along a straight run; add gates, corners, and end conditions as needed.

How does the Fence / Post Calculator calculate the result?+

For the Fence / Post Calculator, it uses the Post count formula: Posts = floor(length / spacing) + 1. 100 ft at 8 ft spacing needs about 13 posts.

What information do I need to use the Fence / Post Calculator?+

For the Fence / Post Calculator, enter total fence length and spacing. Keep the units consistent with the calculator fields and compare your setup with the worked example on the page.

How accurate is the Fence / Post Calculator?+

Fence / Post Calculator is a material estimate based on the dimensions, unit system, and allowance values entered. It uses the Post count formula, but cuts, openings, site conditions, pack sizes, and code requirements can change the final quantity.

What should I check before using the Fence / Post Calculator result?+

For the Fence / Post Calculator, check total fence length and spacing, unit system, waste allowance, openings, site conditions, and supplier pack size. Use the estimate as a planning quantity before ordering materials.

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Construction/Home guide

How to use the Fence / Post Calculator

Estimate fence posts from total fence length and spacing. The page also explains the post count formula and shows a practical example: 100 ft at 8 ft spacing needs about 13 posts.

  1. 1

    Enter your details

    Enter total fence length and spacing, then complete any other fields shown in the calculator.

  2. 2

    Check the calculation

    Review the result alongside the post count formula: Posts = floor(length / spacing) + 1.

  3. 3

    Compare scenarios

    Change one or more inputs to see how they affect the fence / Post Calculator result before you use the estimate.