About this calculator
Estimate fence panels and posts for a straight run.
Gates, corners, slopes and boundary details can change requirements.
Formula
Panels = fence length ÷ panel width, rounded up. Straight-run posts ≈ panels + 1.
Example
18m ÷ 1.8m = 10 panels and about 11 straight-run posts.
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.