Cabinet Door Sizing Calculator

Inset, full overlay, partial overlay — door size and reveal math for face frame and frameless cabinets.

Cabinet setup

Standard European cup hinge: 35mm (0.375").

Door dimensions

Door size
— × —
Width × Height
Reveal (gap)
—
Overlay amount
—
Hinge setback from edge
—
—

The four door styles

Cabinet doors can mount in four ways, each with different sizing math:

Face frame vs frameless: the key difference

Face frame cabinets have a 3/4" × 1-1/2" wood frame around the front. The doors are sized to fit the openings in this frame.

Frameless (European) cabinets have no face frame. The cabinet boxes have 3/4" thick sides that the doors mount to. Standard overlay is 1/2" - 3/4" per door.

The hinge placement differs:

The reveal standard

The "reveal" is the visible gap between door and frame (or between two doors). It's both functional (allows the door to open without binding) and aesthetic.

Wood movement requires larger reveals for inset doors in solid wood — minimum 1/8" to allow for seasonal expansion.

Hinge math

European cup hinges require precise placement:

For heavy doors, add a third hinge in the middle. For tall doors (>40"), use four hinges.

Door sizing for each style

Inset door: Width = Opening Width − 2 × Reveal. Height = Opening Height − 2 × Reveal.

Full overlay (frameless): Width = Opening Width + 2 × Overlay. Height = Opening Height + 2 × Overlay. Overlay typically 3/4".

Partial overlay (face frame): Width = Opening Width + 2 × Overlay. Overlay typically 3/8" - 1/2".

Two doors on one cabinet: Each door = (Opening Width − Reveal between doors) / 2 + Overlay.

Common door-sizing mistakes

Why inset doors are the hardest

Inset doors must be exactly the opening size minus 2× reveal. That's typically 1/8" tolerance on each dimension — for a 14" door, that's a 1% tolerance. Wood movement (across a 14" width, oak moves about 1/16" seasonally) can exceed the entire reveal.

Solutions: use quartersawn stock (less movement), use plywood panels for the door, allow 3/16" reveal on each side, and use a humidity-controlled shop.

Frequently asked questions

What's the most common overlay amount?

For European frameless: 3/4" overlay, 1/8" reveal between doors. For American face frame: 1/2" overlay, with 1" - 1-1/4" of face frame visible.

How do I make sure my doors hang straight?

Use European cup hinges — they have three-way adjustment (in-out, up-down, left-right). Spend $5-10 per hinge for the adjustable ones.

Should I use soft-close hinges?

Soft-close hinges are a luxury feature. Add $5-15 per hinge. Worth it for kitchens, less so for workshop cabinets.