Fence Calculator
Estimate fence posts, sections, rails, pickets or panels, gates, and optional fence costs for your project.
Fence Calculator
Estimate fence posts, sections, rails, pickets or panels, gates, and optional fence costs for your project.
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How many fence posts do I need?
Use the fence calculator above to estimate the number of posts needed for your fence. Enter the total fence length, post spacing, and any gate openings. The calculator subtracts gate width from the fence run before estimating sections and posts.
For example, a 100-foot fence with one 4-foot gate has 96 feet of net fence length. At 8-foot post spacing, that is about 12 fence sections. Gate posts are added separately because gates normally require their own support posts.
Fence post spacing calculator
Post spacing affects both the number of posts and the number of fence sections. Enter the spacing recommended for your fence system or use the spacing specified by the product manufacturer or contractor.
Common planning spacing is often around 6 to 8 feet, but the correct spacing depends on the fence type, post size, terrain, wind exposure, corners, gates and local requirements. The calculator is a planning estimate, not a structural specification.
Fence material calculator
The calculator can estimate several common fence material quantities. Wood fences can be estimated using rails and pickets. Vinyl and aluminum fences can be estimated using panels. Chain-link fences can be estimated using mesh rolls.
- Posts: estimated from net fence length, post spacing and gate posts.
- Sections: estimated from the net fence length and post spacing.
- Rails: used for wood fence planning based on rails per section.
- Pickets: estimated from picket width, gap and fence length.
- Panels: estimated from panel width for applicable fence types.
- Chain-link mesh: estimated in standard roll quantities.
Add a waste or extra percentage when you want to allow for cuts, damage, measurement differences or other project-specific needs.
Fence cost calculator
You can optionally enter a material price per linear foot and an installation price per linear foot. The calculator uses those values to provide a planning estimate for material and installation costs.
Actual fence prices vary by material, height, gate type, site access, terrain, removal work, labor rates, permits and local contractor pricing. Treat the result as an estimate rather than a quote.
Wood fence calculator
For a wood fence, enter the fence length, height, post spacing, rails per section, picket width and picket gap. The calculator estimates posts, sections, rails and pickets. Product dimensions can vary, so compare the estimate with the actual dimensions of the fence materials you plan to buy.
Vinyl fence calculator
For a vinyl fence, the calculator estimates fence panels based on the panel width you enter, along with posts, sections and gates. Vinyl fencing systems differ by manufacturer, so use the panel and post dimensions supplied with the product.
Chain link fence calculator
For chain-link fencing, the calculator estimates mesh rolls from the net fence length and the standard roll size used by the tool. Post counts are estimated from your selected spacing. Actual chain-link projects may also require terminal posts, line posts, tension wire, fittings and other hardware.
Fence installation
If you are planning a fence installation but do not want to install it yourself, you can use your estimate to discuss the project with a local fencing contractor. A contractor can review your layout, gates, corners, terrain and local requirements and provide a project-specific quote.
How to calculate how much fence I need
Start by measuring the total length of the fence line. Account for gate openings, choose the fence height and determine the post spacing for your fence system. Then estimate the posts, sections, panels, pickets or mesh required and add an optional waste allowance.
Fence Calculator FAQ
What does a fence calculator estimate?
It can estimate fence length, sections, posts, gate posts, rails, pickets or panels, chain-link mesh rolls and optional material and installation costs.
How far apart should fence posts be?
Post spacing depends on the fence system and site conditions. Use the spacing specified by the manufacturer, contractor or local requirements rather than treating a general spacing value as a structural rule.
Does a gate change the number of fence posts?
Yes. Gate openings reduce the net fence length, while gate posts are counted separately. Corners and end conditions can also change the final post count.
Can I calculate a wood fence?
Yes. Select Wood and enter the rail, picket width and picket gap settings to estimate common wood fence materials.
Can I estimate fence installation cost?
Yes. You can enter an optional installation price per linear foot for a planning estimate. Local contractor pricing can vary significantly.
Is the fence estimate exact?
No. It is a planning estimate. Actual quantities and costs can change because of product dimensions, corners, gates, terrain, waste, local requirements and installation methods.
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