Fence Panel & Post Calculator
Estimate prefab panels, posts, and caps for a straight (or multi-gate) fence run. Units: feet. Print the shopping list before you buy.
HomeFixMath — Fence shopping list
Shopping list
Enter valid measurements above to build your list.
- Fence panels (match width & height)
- Fence posts
- Post caps
- Post-hole concrete mix / gravel (as needed)
- Gate kit & hardware (if gates > 0)
Retailer buy links will appear here after affiliate networks are approved (Impact / CJ / Awin). See Affiliate Disclosure.
Estimates only. Measure your property line carefully; call 811 before digging; follow manufacturer instructions and local code.
How we calculate
- Net panel length = total run − (gates × gate width).
- Panels = ceil(net ÷ panel width). Always round up.
- Posts = panels + 1, plus 2 posts per gate, plus any extras you enter.
- Caps = total posts when enabled.
Example: 100 ft, one 4-ft gate, 8-ft panels → net 96 ft → 12 panels, 15 posts, 15 caps.
Does not size post diameter, hole depth, concrete volume, or permits. Prefab panel sections only (not board-by-board picket math).
FAQ
How many posts for 100 feet? With 8-ft panels and one 4-ft gate: 15 posts (see example above).
6-ft vs 8-ft panels? Wider panels mean fewer posts and faster install, but each panel is heavier.
Do I need concrete? Often yes for wood/vinyl posts — follow the post and local frost-line guidance; this tool does not estimate bags yet.
Why round up panels? A partial bay still needs a full panel to cut down. Order extras if your line is uneven.
Estimates only. Measure your property line carefully; call 811 before digging; follow manufacturer instructions and local code.