# Fence Material and Post Centers Calculator

## Estimating Fence Materials

Calculate fence materials, posts, rails, pickets, concrete, and hardware given the fence length. Get an estimate of material costs using pressure treated wood, cedar, or redwood. Use our vinyl fence calculator to estimate vinyl materials.

## Material Estimate:

## On this page:

- Fence Calculator
- Estimating Fence Materials
- How to Estimate Privacy Fence Materials
- How to Estimate Fence Price
- Determine Types of Lumber For a Privacy Fence
- Solid Board Privacy Fences
- Estimating Solid Board Fence Materials
- Shadowbox Fences
- Estimating Shadowbox Fence Materials
- Stockade Fences
- Estimating Stockade Fence Materials
- Picket Fences
- Estimating Picket Fence Materials
- Slip-Board Fences
- Estimating Slip-Board Fence Materials
- How to Estimate How Much Material You Need
- How Many Posts Are Needed to Build A Fence
- How Many Rails Are Needed to Build A Fence
- How Many Pickets Are Needed to Build A Fence
- Tips For Estimating Fence Lumber

## How to Estimate Privacy Fence Materials

Fences are a great way to add privacy, security, and decor to your property. They can be constructed from a variety of materials including wood, metal, vinyl, and stone. The type of material you choose depends on its purpose and the style you prefer. Wood fences are great for adding privacy and security and are commonly preferred for their style and affordability.

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When building a wood fence, you’ll need to determine what lumber and hardware you need and how much of each. For most wood fences you need posts, rails, pickets, concrete, and nails or screws. You may also need gate hardware, post caps, stain or paint, lighting, or other materials depending on the style you choose. We also have a tool to estimate the amount of concrete you need for your fence posts.

Once you’ve chosen a style, you can enter your total length and rail and picket specs into the wood fence calculator above to get an estimated bill of materials. The calculator will estimate how much lumber you need to construct your fence, including the number of posts, rails, pickets, concrete, and nails/screws. Learn more about how to install a wood privacy fence and get pro tips for your installation.

## How to Estimate Fence Price

The average fence costs $2000-$8000 to install, which is a fairly wide range. The first step to determining a more accurate price of a new fence installation is to calculate the amount of material needed. The second step is to choose the type of material used. Common choices are pressure treated wood, cedar, or redwood, and they vary in price considerably.

Visit a home center or lumberyard to find how much a 4×4, 2×4, and picket will cost for the type of lumber selected. Also get the price of exterior screws and post-setting concrete. With pricing in hand, multiply the price by the amount of material needed, then add each of them together to get a total estimated cost. Learn more about how much each style of fence costs or get a professional estimate for your project to find precisely what it will cost.

## Determine Types of Lumber For a Privacy Fence

The style of fence you choose will determine what types of lumber you need. Some will have two horizontal rails between the posts and others will have 3, 4, 5, or more. Some fences have no pickets, while others have pickets with no gap, and others have a space between the pickets.

### Solid Board Privacy Fences

A solid wood privacy fence consists of posts with 2 or 3 rails in between and pickets that have no gaps. All of the pickets are installed on the outside of the rails. The solid wood style has a good side and a bad side, and typically the good side is shown on the public-facing side of the property. See popular solid board styles.

#### Estimating Solid Board Fence Materials

To estimate the lumber to build a solid board fence use the following values for the form above:

- Length: *the length of your fence
- Rails per Section: 2 or 3
- Picket Spacing (inches): 0
- Picket Width (inches): 5.5

For example, estimating a 100′ length solid wood style would require an estimated 14 posts, 26 rails, and 219 pickets.

### Shadowbox Fences

A shadowbox style fence consists of posts with 2 or 3 rails in between and pickets installed on both sides of the rails with a gap between them, but overlapping the other side. Because pickets are mounted on both sides, the shadowbox style looks the same on each side, so there is no good or bad side.

#### Estimating Shadowbox Fence Materials

To determine the wood needed to build a shadowbox style fence use the following values for the form above:

- Length: *the length of your fence
- Rails per Section: 2 or 3
- Picket Spacing (inches): -1 for a 2.5″ gap or -2 for a 1.5″ gap
- Picket Width (inches): 5.5

A 100′ long shadowbox style would require about 14 posts, 26 rails, and 267 pickets.

### Stockade Fences

A stockade style fence consists of posts with 2 or 3 rails and pickets similar to the solid board fence. Thinner pickets are used to achieve the stockade style. Just like a solid board fence a stockade style has a good side and a bad side.

#### Estimating Stockade Fence Materials

Use the following values for the form above to estimate the wood needed to build a stockade fence:

- Length: *the length of your fence
- Rails per Section: 2 or 3
- Picket Spacing (inches): 0
- Picket Width (inches): 2.5

### Picket Fences

A picket fence consists of posts with 2rails and thin pickets. The pickets are spaced evenly, usually, the gap matches the width of a picket, but this can vary. The pickets are installed on the same side of the rails, so there is a good and bad side. See popular picket styles.

#### Estimating Picket Fence Materials

Use the following values for the form above to estimate the lumber needed to build a picket fence:

- Length: *the length of your fence
- Rails per Section: 2 or 3
- Picket Spacing (inches): 2.5
- Picket Width (inches): 2.5

### Slip-Board Fences

A slip-board fence consists of posts with 2, 3, 4, or more rails and no pickets. Traditional slip-board fences have three rails and are constructed of rough materials. Slip-board fences can also be built using common dimensional lumber.

#### Estimating Slip-Board Fence Materials

Although the calculator above can estimate the number of posts and rails, you may consider using different sized boards to achieve a different style. Use the following values for the form above to estimate the wood needed to build a slip-board fence:

- Length: *the length of your fence
- Rails per Section: 3
- Picket Spacing (inches): 0
- Picket Width (inches): 0

## How to Estimate How Much Material You Need

### How Many Posts Are Needed to Build A Fence

The first step in figuring out how much wood is needed to build a fence is to measure the length. Given the total length, you can estimate the number of posts you need. To determine the number of posts just divide the length of the fence in inches by 96 (8′) and round up to get the number of sections, then add 1 for the last post. For instance, if your length is 1200 inches follow the formula: 1200 / 96 = 12.5, round up to 13 and then add 1 = 14 total posts needed. Posts are commonly constructed using 4×4 dimensional lumber. Check out our foot to inch conversion utility if you need help converting feet to inches.

### How Many Rails Are Needed to Build A Fence

You can find how many horizontal rails you need to build a fence by multiplying the number of sections from the previous formula by the number of rails per section. If you want three horizontal rails and there are 13 sections use the following formula: 13 x 3 = 39. 2×4 dimensional lumber is typically used for the horizontal rails.

### How Many Pickets Are Needed to Build A Fence

Calculating the pickets for a fence is the hardest part. The first step is the find the distance between each post using the calculator above and then dividing by the width of the picket plus the space between the pickets. For instance, if you are building a solid board fence using 5.5″ pickets with no space between the pickets use the following formula: 1200 / 13 = 93″ sections. 93 / 5.5 = 17 pickets. Pickets are usually a 2.5″ or 5.5″ board that is 3/4″ thick.

### Tips For Estimating Fence Lumber

We recommend ordering 10% extra lumber to account for cutoffs and waste. Also plan on ordering lumber to build a gate, including additional posts and hardware. Gate posts should be 4×4 or 6×6 dimensional lumber.

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