What is the difference between full overlay and half overlay doors?

Full overlay doors cover the entire face frame, with only a small gap between adjacent doors. Half overlay covers approximately half the face frame stile width on each side. Inset doors sit flush within the opening. Full overlay gives a modern, seamless look while inset is more traditional.

How much gap should I leave between cabinet doors?

A gap of 2-3mm between adjacent doors is standard for overlay designs. For inset doors, 1.5-2mm all around is typical. In humid environments, increase gaps slightly to allow for wood movement. Use consistent shims during fitting for even gaps.

How many hinges does a cabinet door need?

Doors up to 1000mm tall need 2 hinges. Doors between 1000-1500mm need 3 hinges. Above 1500mm, use 4 hinges. Place the top hinge 75-100mm from the top edge and the bottom hinge the same distance from the bottom. Space middle hinges evenly.

What size concealed hinge do I need?

The 35mm cup hinge (Blum 110 degree or similar) is the standard for most cabinet doors in the UK. Use 110-degree opening for standard doors, 170-degree for doors that need to open wider. The cup hole should be drilled 21-22mm from the door edge.

WoodCalcs

Cabinet Door Calculator — Door Dimensions & Overlay

Work out cabinet door dimensions, overlay calculations, and hinge requirements.

Opening Width

Clear opening of the cabinet

Opening Height

Measure floor to ceiling or top of area

Overlay Type

Select the overlay type for your calculation

Hinge Type

Type affects placement and number needed

Overlay Amount

How far door overlaps the frame

Gap Between Doors

Number of Doors in Opening

1 for single, 2 for double doors

How We Calculate This

This calculator determines cabinet door dimensions based on the opening size, overlay type, and number of doors per opening.

Overlay formulas

Full/Half overlay: Door width = (Opening + 2 x Overlay - Gaps) / Number of doors

Inset: Door width = (Opening - (Number of doors + 1) x Gap) / Number of doors

The height calculation follows the same logic. Hinge count is determined by door height: 2 hinges up to 1000mm, 3 up to 1500mm, 4 for taller doors. Hinges are positioned 75-100mm from the top and bottom edges.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify measurements and material quantities before cutting or purchasing.