Calculate fence posts, panels, concrete and gate allowances.
A fence always needs one more post than it has bays, and each gate adds a further post because gates hang between dedicated posts. Embedment at a third of the exposed height is the standard rule for wind resistance. Post count and concrete volume are where fence estimates go wrong, and the one-extra-post rule is the most commonly missed part.
Fence
Posts = bays + 1, plus one extra per gate; embedment is one third of fence height
Posts = bays + 1, plus one extra per gate; embedment is one third of fence height A fence always needs one more post than it has bays, and each gate adds a further post because gates hang between dedicated posts. Embedment at a third of the exposed height is the standard rule for wind resistance.
Post count and concrete volume are where fence estimates go wrong, and the one-extra-post rule is the most commonly missed part.
This calculator takes 5 inputs: Fence length, Post spacing, Fence height, Number of gates, Post hole diameter. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.