Fence Calculator

Fence Calculator

Just, enter the values and get to determine the plan and budget for your privacy fencing project.

Fence Length :

in ▾

Post Space :

ft ▾

Post height: Fence height:

Fence height :

in ▾

Number of pickets needed

Picket Width :

in ▾

Picket Spacing :

ft ▾

Number of rails needed

Number of Rails: Rails per Section:

Number of Rails :

Concrete for post footing

Concrete for Cuboid Shape: Concrete for Cylindrical Shape:

Post Width :

in ▾

Post Thickness :

ft ▾

The Fence calculator helps to calculate the amount of fencing material that you have to complete your fencing project. This calculator calculates the material needed (number of posts, fences, rails, concrete, pickets) for those who want a convenient way to plan and budget for their fencing needs.

How Fence Calculator Works?

Let’s explore the type of measurements a fence calculator requires to deliver fast and accurate results. Understanding these inputs will help you use the tool more effectively.

Required Values:

Enter the fence length and post spacing, then choose the appropriate measurement units
Select whether you want to calculate the fence height or the post height
Provide the picket width and picket spacing along with their units
Choose whether you want to calculate the concrete volume for a cuboid post or a cylindrical post
After making the selection, enter all the related parameter values
Click the calculate button to generate results

Results Summary:

Total number of posts required for the fence
Total number of fence sections
Calculated height of the fence post
Number of rails per fence section
Total number of pickets needed
Concrete volume displayed in cubic inches, cubic feet, and cubic yards
Estimated cost of different wood types per linear foot

What Is a Privacy Fence?

"A fence is a structure used as a boundary or barrier, usually made from posts with wire, boards, or other materials"

A picket fence is a specific type of fence featuring evenly spaced vertical boards, as illustrated in the image below.

wooden fence

Formulas for Fence Calculations:

Number of Posts:

Number of Posts = (Fence Length / Post Spacing) + 1 (Round up to the nearest whole number)

Number of Sections:

Number of Sections = Number of Posts - 1

Post Length:

Post Length = Fence Height × 1.5

Number of Rails:

Total Rails = Number of Rails per Section × Number of Sections

Number of Pickets:

Total Pickets = Fence Length in Inches / (Picket Width + Picket Spacing) (Round up to the nearest whole number)

Formulas for Total Concrete Volume:

Volume of Concrete:

Volume of Concrete = (Hole Volume - Post Volume) × Number of Posts

Cuboid Post Volume:

Cuboid Post Volume = Post Width × Post Thickness × Post Depth

Cuboid Hole Volume:

Cuboid Hole Volume = (3 × Post Width) × (3 × Post Thickness) × Post Depth (in inches)

Cylindrical Hole Volume:

Cylindrical Hole Volume = (3 × Post Radius)² × Post Depth (in inches) × π

Cylindrical Post Volume:

Cylindrical Post Volume = Post Radius² × Height of Buried Part of Post × π

How to Do Fence Calculations?

Here, we will go through the calculation of key fence construction parameters so you can understand the process clearly and apply it accurately.

Example:

Harry wants to build a 100 ft long wooden fence around his porch. How many posts and rails will he need for this project? (Assume the spacing between posts is 6.6 ft and each section will have 6 rails.)

Solution:

Step 1: Calculate Number of Posts

Number of Posts = (Fence Length / Post Spacing) + 1 (Round up)

= (100 ft / 6.6 ft) + 1 (Round up)

= 16.15 → Round up

= 17 posts

Step 2: Calculate Number of Sections

Number of Sections = Number of Posts - 1

= 17 - 1

= 16 sections

Step 3: Calculate Total Number of Rails

Total Rails = Number of Rails per Section × Number of Sections

= 6 × 16

= 96 rails