Fence Calculator
Estimate fence panels and posts from run length and spacing.
Use decimals when needed. This estimate updates live and is safe to tweak before you buy materials.
Fence Buying Guide
This guide helps you turn your fence calculator result into a cleaner purchase plan. Use it when you want fewer return trips, better waste assumptions, and a more realistic cart.
Step 1: Measure twice
Take two independent measurements and use the larger value when they differ. That single decision prevents most material shortages.
Step 2: Set realistic waste
Simple layouts use lower waste, while angled cuts and pattern matching push waste higher. Do not force one waste value for every room.
Step 3: Buy by package unit
Suppliers sell by boxes, bundles, or rolls. Convert your estimate to purchase units and round up once at checkout.
Cost planning rule of thumb
Build your budget in three bands: material-only, material+consumables, and full project with tool contingency. This keeps expectations realistic before you buy.
Recommended for this job
Commonly paired tools and accessories
These are the practical extras people often forget until the last minute, especially when turning a rough estimate into a real purchase list.
Post hole diggerWhy this helps: Common add-on that reduces last-minute store runs once the estimate is final.
Fence post levelWhy this helps: Common add-on that reduces last-minute store runs once the estimate is final.
Disclosure: these may be affiliate links.
Fence Calculator FAQ
How many posts do I need?
Posts are usually one more than panels for straight runs.
Do gates change this estimate?
Yes. Add gate hardware and adjust panel count around openings.
How deep should fence posts go?
Rule of thumb is to bury at least 1/3 of the post's total length in the ground, usually below the frost line.
Do I need a permit for a fence?
Most municipalities require a permit for fences over 6 feet tall or for fences installed in the front yard. Always check local zoning laws.