Fence Calculator
Divide the fence length by your post spacing and round up to get sections, add one closing post, then multiply sections by rails per section and posts by concrete bags per post for a straight-run shopping list.
Fence Calculator
Divide the fence length by your post spacing and round up to get sections, add one closing post, then multiply sections by rails per section and posts by concrete bags per post for a straight-run shopping list.
Method and assumptions
Figur turns your measurements into purchase quantities with standard geometry: it computes the area, length, or volume, applies the waste or spacing you enter, and rounds up to whole purchase units. Everything is calculated locally in your browser.
- Purchase quantities round up to whole units (sheets, bundles, boards, bars, or packages) because suppliers do not sell fractions.
- Assumed coverages and package sizes (for example, 3 bundles per square or 4×8 sheets) are common conventions; verify your product label and supplier.
- The waste percentage is applied exactly as entered; complex cuts, patterns, and damage can require more.
- The result does not replace your field measurements, plans, or local code requirements.
This tool provides a planning takeoff, not a binding bid, structural design, or engineering advice. Confirm quantities with field measurements, your supplier, and the applicable professionals before buying.
Sources and references
No external data source is required: this calculator applies standard geometry to the measurements, coverages, and waste you enter.
Frequently asked questions
How many bags of concrete per post?
Two 50-lb bags per post is a common allowance for residential fence posts, but hole diameter, depth, and soil change it. Enter the allowance your crew actually uses.
Does this handle gates and corners?
Gates, corners, and slope breaks each add posts and hardware beyond a straight run. Count them separately and add them to the post and concrete totals shown here.