How does board-on-board fencing differ from a conventional fence?

Board-on-board fencing overlaps each picket over the previous one to compensate for wood shrinkage, whereas conventional fences leave gaps between pickets that can widen as the wood dries.

Can this calculator determine how many concrete bags I need for the fence posts?

No, the tool provides post and section counts only; for concrete volume, users must consult a separate post-hole concrete calculator.

What measurements do I need to provide to use the calculator?

You need to input the fence length, height, post spacing distance, picket width, and the desired overlap amount between boards.

Is the result accurate for any type of wood or fence style?

The estimate assumes standard board-on-board design principles; actual material needs may vary based on specific wood dimensions, local spacing norms, and design choices.

ConstructionFree Tool

Board-on-Board Fence Calculator

Provided byOmni Calculatoromnicalculator.com

This board-on-board fence calculator determines how many pickets, posts, sections, and rails your fence needs.

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Screenshot of Board-on-Board Fence Calculator on Omni Calculator — omnicalculator.comOpen the live tool →

About this tool

What Board-on-Board Fence Calculator does

A board-on-board fence calculator determines the number of pickets, posts, sections, and rails required for a privacy-style fence. Users input the fence length, height, post spacing, picket width, and overlap amount to receive an estimated material list tailored to their project. The tool accounts for the overlapping design that compensates for wood shrinkage, providing counts for all primary structural components needed for construction. The calculator also references related tools for post-hole concrete calculations. The Omni Calculator version distinguishes itself through a clean, step-by-step interface that clearly separates input fields from results. It organizes outputs into distinct categories—posts and sections, rails, and pickets—with labeled fields for post length and rails per section. Unlike some simpler fencing tools, it includes specific options for picket overlapping to address shrinkage, and provides a direct link to a post-hole concrete calculator for foundation planning. The site also offers a brief explanation of board-on-board design principles, helping users understand why the overlapping method differs from conventional fence construction.

Step by step

How to use the Omni Calculator Board-on-Board Fence Calculator

1
Enter the total fence length in linear feet or meters
2
Specify the fence height and desired post spacing distance
3
Input the width of each picket and the overlap amount between boards
4
Review the calculated totals for posts, sections, horizontal rails, and pickets needed

Is it right for you

Best for

Homeowners and DIY enthusiasts planning a privacy fence who want a quick, estimated material list without manual geometry calculations.

Limitations

Results are estimates based on default spacing assumptions
Does not account for local building codes or permit requirements
Concrete volume for post holes must be calculated separately using another tool

Questions

Board-on-Board Fence Calculator FAQ

How does board-on-board fencing differ from a conventional fence?: Board-on-board fencing overlaps each picket over the previous one to compensate for wood shrinkage, whereas conventional fences leave gaps between pickets that can widen as the wood dries.
Can this calculator determine how many concrete bags I need for the fence posts?: No, the tool provides post and section counts only; for concrete volume, users must consult a separate post-hole concrete calculator.
What measurements do I need to provide to use the calculator?: You need to input the fence length, height, post spacing distance, picket width, and the desired overlap amount between boards.
Is the result accurate for any type of wood or fence style?: The estimate assumes standard board-on-board design principles; actual material needs may vary based on specific wood dimensions, local spacing norms, and design choices.

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