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Use our free wood fence calculator to estimate fence posts, rails, pickets, concrete, and material costs. Plan your wood fence with ease.
| Formula | Meaning |
|---|---|
| F = L − G | Effective fence length (total length minus gate openings) |
| Sections = ceil(F ÷ S) | Number of fence sections for a straight run |
| Posts = Sections + 1 + Gates | Posts for a straight run, plus one extra post per gate |
| Pickets = ceil(F ÷ (Picket Width + Gap)) | Number of pickets for uniform spacing |
| Concrete = ceil((Hole Vol − Post Vol) × Posts × waste ÷ Bag Yield) | Concrete bags needed |
Building a wood fence takes time and money. You need the right number of posts, rails, and pickets. Our wood fence calculator helps you plan these materials in a few steps. Enter your fence size and board details to get a quick estimate. You can also add waste, concrete, and material prices to plan your budget.
A wood fence calculator is a free online tool that estimates the supplies you need for a fence. It can help you count posts, rails, and pickets. It can also estimate concrete and material costs when you add the right details.
Think of it as a shopping list for your fence project. It helps you plan ahead and avoid extra trips to the store.
The calculator uses simple formulas to estimate fence supplies.
1. Effective fence length
Effective Length = Total Fence Length − Total Gate Width
2. Fence sections
Sections = Round Up (Effective Length ÷ Maximum Post Spacing)
3. Fence posts
Posts = Sections + 1 + Gate Count
This post formula suits a basic straight run. Gates, corners, and shared posts may change the final count.
4. Fence rails
Base Rails = Sections × Rails per Section
5. Fence pickets
Base Pickets = Round Up (Effective Length in Inches ÷ (Picket Width + Gap))
6. Materials with waste
Purchase Quantity = Round Up (Base Quantity × (1 + Waste Percentage ÷ 100))
7. Material cost
Material Cost = Purchase Quantity × Price per Item
These formulas give you a useful starting estimate. Your fence layout and board sizes can change the final amounts.
1. Enter the fence length. Add the full fence length and choose the right unit.
2. Add gate openings. Enter the total width of all gates.
3. Set the fence details. Add the fence height, post spacing, picket width, and board gap.
4. Choose rails and waste. Enter the number of rails per section and your waste allowance.
5. Review the results. Check the estimated posts, rails, pickets, and costs. Add concrete details and prices if needed.
Suppose you want to build a 100-foot fence with one 10-foot gate opening. You plan to use 8-foot post spacing, three rails per section, and a 10% waste allowance.
Effective Length = 100 − 10 = 90 feet.
Fence Sections = Round Up (90 ÷ 8) = 12.
Base Rails = 12 × 3 = 36 rails.
Rails with Waste = Round Up (36 × 1.10) = 40 rails.
Now use 5.5-inch pickets with a 0.5-inch gap.
Base Pickets = Round Up (90 × 12 ÷ 6) = 180 pickets.
Pickets with Waste = Round Up (180 × 1.10) = 198 pickets.
This gives you 40 rails and 198 pickets to plan for. Post counts still depend on the gate and fence layout.
The cost depends on fence length, wood type, height, and local prices. Labor, gates, and ground conditions can also raise the total.
How much would a 100 ft wood fence cost? Multiply the amount of each material by its price. Then add labor and other costs if needed.
How much does a 200 ft wood fence cost? A longer fence needs more supplies. But the cost may not be exactly twice as high, since gates, labor, and site work can vary.
A wood fence calculator helps you estimate material costs before you buy. Enter current prices for a more useful budget.
Our free fence calculator makes fence planning easier. It helps you estimate key materials and spot likely costs before work begins. Use the results as a guide, then check your layout and local prices. A little planning now can save time and money later.
For 5.5-inch pickets with no gaps, 100 feet needs about 219 pickets before waste. Add 10% waste, and you need about 241 pickets. Wider gaps will lower the count.
Count your posts, rails, pickets, and concrete. Multiply each amount by its price, then add labor, gates, and other costs.
Yes. A free fence calculator can estimate materials and help you plan your budget before you shop.
You can check tools and material prices from Lowe's or Home Depot. Compare their estimates with your fence layout and the prices at your local store.
Yes, some tools offer app-based access or mobile-friendly pages. A free wood fence calculator app can help you check estimates while you plan your project.
You can search online for a wood fence calculator near you. For accurate costs, use local wood prices and labor rates.
A picket fence calculator estimates the number of boards needed based on fence length, board width, and gap size.