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Vinyl Fence Calculator

Posts a panel apart — the panels, the posts routed for where they stand, and their caps.

An estimate of material — your panel maker's post spacing decides the layout.

100' · 1200 in · 100 ft · 30.48 m

100 ft

This page recalculates as you type. There is no Calculate button.

Answer

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Panels

13 panels

100 ft of fence · 13 bays · 14 posts in holes 42" deep

Posts 14 posts
Fence, gates left out 100 ft
Concrete 38 × 50 lb fast-setting
Gravel under the posts 8 × 50 lb bags (0.5 ft³)
Ticked items cost $2,470.91
More numbers
Post holes 42" deep, 10" across
Widest post spacing 7' 8 5/16" on center
DrawingThe project drawn to scale. Run 1: 100' × 6'.100'6'Run 1

Buying noteCall 811 a few business days before you dig. It is the free national before-you-dig service: the utilities mark their lines, and every post hole needs it.
Buying noteYour frost depth is not set. Where the ground freezes, a post set above the frost line heaves: ask your building department for the depth (IRC Table R301.2(1)) and type it under Assumptions — every hole follows it.

Breakdown

Run or gate Measurements Qty Length Share
Run 1 100' Add ×1 100 ft

What to buy

Buying noteCall 811 a few business days before you dig. It is the free national before-you-dig service: the utilities mark their lines, and every post hole needs it.
Buying noteYour frost depth is not set. Where the ground freezes, a post set above the frost line heaves: ask your building department for the depth (IRC Table R301.2(1)) and type it under Assumptions — every hole follows it.

Ways to buy the concrete

The bags for every post hole together, by the shape of the holes. Every way is worked out; pick the one you will buy.

38 × 50 lb fast-setting Bags 38 Left over 0.15 ft³ Weight 1,900 lb Cost $303.24 Reference price $7.98. Type your store's.

Shopping list

12 12 × 9 ft $515.16 Reference price $4.77. Type your store's.
2 2 × 9 ft $85.86 Reference price $4.77. Type your store's.
13 panels, 6 × 8 ft $1,430.13 Reference price $110.01. Type your store's.
14 caps $92.68 Reference price $6.62. Type your store's.
38 38 × 50 lb fast-setting $303.24
8 8 × 50 lb bags (0.5 ft³) $43.84 Reference price $5.48. Type your store's.
Ticked items $2,470.91

Untick what you already have. Lumber is priced by the foot, beside its row; the concrete's bags are priced in the table above.

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How this was worked out

Every number below is yours. Each constant links to the row where you can change it.

Run 1 100' 100 ft
Posts 13 bays in 1 runs: 12 line + 2 end + 0 corner + 0 gate 14 posts

Change:Post spacing, vinyl panels

How deep a post goes 0.5 × 72" out of the ground, or the frost depth 0" where deeper 36" + 6" = 42"

Change:Post in the ground, share of its height aboveYour frost depthGravel in the bottom of a hole

Line posts, length 72" + 36" = 108" 12 × 9 ft
End posts, length 72" + 36" = 108" 2 × 9 ft
Concrete, each line post (π ÷ 4 × 10" × 10" − 5" × 5") × 32 1/2" 1.007 ft³ × 12 = 12.084 ft³

Change:Hole across, vinyl postConcrete stops under the ground

Concrete, each end post (π ÷ 4 × 10" × 10" − 5" × 5") × 32 1/2" 1.007 ft³ × 2 = 2.014 ft³

Change:Hole across, vinyl postConcrete stops under the ground

Bags of concrete 14.098 ft³ ÷ 0.375 ft³ 37.59 → 38 × 50 lb fast-setting

Change:Yield, 50 lb fast-setting bag

Gravel under the posts π ÷ 4 × 10" × 10" × 6" × 12 + π ÷ 4 × 10" × 10" × 6" × 2 3.818 ft³ → 8 × 50 lb bags (0.5 ft³)

Change:Gravel in the bottom of a hole

Panels one panel to each of the 13 bays, the last of a run cut to fit 13

Change:Post spacing, vinyl panels

What it comes to 12 × 9 ft × $4.77/ft + 2 × 9 ft × $4.77/ft + 13 × $110.01 + 14 × $6.62 + 38 × $7.98 + 8 × $5.48 $2,470.91

Assumptions

Every one of these is editable. Change one and the answer changes with it.

Assumption Value Confidence
Post spacing, vinyl panelsA 6×8 vinyl privacy panel (Veranda Linden) is 91 in wide between 5 in posts: 96 in on center. Freedom's kit instructions space posts at the panel's width plus the post's. ~ in Derived or single-supplier
Post in the ground, share of its height aboveQuikrete Fast-Setting Concrete Mix spec sheet, section 5: a post hole one half as deep as the post stands above ground. Quikrete's Setting Posts sheet says the same as one third of the post's length, and so does Home Depot's chain link guide for its posts. ratio From a data sheet or an agency document
Your frost depthYour frost depth, from your building department (IRC Table R301.2(1) is filled in locally). 0 means not given: every hole is then as deep as the post's own rule. Typed in, no hole stops above it. ≈ in Trade convention
Gravel in the bottom of a holeQuikrete Setting Posts, step 2: 6 in of gravel or crushed stone in the bottom of the hole, for drainage. in From a data sheet or an agency document
Concrete stops under the groundQuikrete Setting Posts, steps 4 and 6: fill the hole to 3-4 in below the top, then finish with soil. The middle of the range. in From a data sheet or an agency document
Hole across, vinyl postFreedom vinyl fence kit instructions, p. 2: a 10 in hole for a 5×5 post. Veranda's instructions say the same. in From a data sheet or an agency document
Yield, 50 lb fast-setting bagQuikrete Fast-Setting Concrete Mix spec sheet. ft³/bag From a data sheet or an agency document

How many vinyl panels and posts

On a panel fence the posts are not spaced by choice: they stand a panel apart. A 6 by 8 foot vinyl privacy panel is about 91 inches wide between 5 inch posts, so the posts stand 96 inches on center. 100 feet of fence is 12½ panels, so 13 panels — the last one cut to fit — and 14 posts: 12 line posts and an end post at each end. Home Depot's fencing calculator, asked for the same 100 feet with no corners, prints 15 posts.

Each post is a 5 by 5 inch post 9 feet long: 72 inches stand above the ground and 36 go into it, in a 10 inch hole on 6 inches of gravel — the hole Freedom's and Veranda's instructions both give. Fourteen of them take 38 bags of fast-setting concrete, and 14 post caps.

Posts are routed for where they stand

A vinyl line post is routed through two faces for the rails of the panels either side; an end post on one face; a corner post on two faces at a right angle. A gate post is not routed at all, and takes an aluminum stiffener inside so the hinges have something to bite. Buy each kind for where it stands — the list counts them apart.

Before you order

Measure post to post along each run and let the page split it into panels. If a run is a few inches over a whole number of panels, moving an end post is cheaper than cutting a panel. Set the end posts first, string a line between them, and set the rest along it a panel apart. Vinyl gates usually come as a kit with hinges and a latch; untick those rows if yours does. We are not connected with any maker, store or supplier named here.