Fence Gate Hardware Calculator

Calculate hinges, latches, and drop rods needed for single and double fence gates.

Single Gates (gates)

Number of single-leaf gate openings.

Double Gates (gates)

Number of double-leaf (two-panel) gate openings.

Widest Gate Leaf (ft)

Width of a single leaf — leaves over 4 ft need a third hinge for support.

Gate hardware count comes down to two things: how many gate leaves you have, and how wide each one is. Every leaf needs its own set of hinges, and a leaf under 4 feet wide typically holds fine on 2 hinges, while anything wider needs a third to stop it from sagging over time. Double gates add a wrinkle — one leaf is usually active (with the latch) and the other is passive, held by a drop rod or cane bolt into the ground or a header, so double gates need a drop rod that single gates don't.

Frequently Asked Questions

How many hinges does a wide gate need?

Gate leaves up to 4 feet wide generally need 2 heavy-duty hinges. Leaves wider than 4 feet, or gates carrying extra weight like solid privacy panels, should use 3 hinges to prevent sagging.

Do double gates need extra hardware beyond hinges and a latch?

Yes — double gates need a drop rod (also called a cane bolt) on the inactive leaf so it can be locked into a sleeve in the ground or a header, keeping that leaf steady while the active leaf opens and closes.