Cabinet Door Size Calculator

The two cabinet construction systems

Cabinet construction divides broadly into two systems with different philosophies:

Face frame (traditional American)

• Solid wood frame attached to the front of the cabinet box
• Typically 1.5" wide rails (horizontal) and stiles (vertical)
• Hinges attach to the face frame
• Door fully or partially covers the frame
• Standard in American kitchens since the early 1900s

Frameless / European (also called “32mm system”)

• No face frame — the cabinet box edges are visible
• Hinges attach directly to the cabinet sides
• Doors always full overlay (cover the entire cabinet face)
• Standard in IKEA, modern European, and contemporary American kitchens
• More accessible interior storage (no frame to obstruct)

Both systems are valid; modern Americans often prefer frameless for contemporary looks, while face frame is associated with traditional and craftsman styles.

Three overlay styles

Within face-frame construction, three door styles dominate:

Full overlay:

• Door covers the entire face frame opening AND overlaps the frame by 1/2" to 3/4" per side
• Most face frame visible only at edges and middle stiles
• Modern, clean look
• 1/8" gap between adjacent doors (so they don’t collide)
• Most popular style in modern American kitchens

Partial overlay (also called “half overlay” or “1/2 inch overlay”):

• Door overlaps the frame by typically 3/8" to 1/2" per side
• Significant face frame visible between doors
• More traditional appearance
• Common in older homes (pre-1990s)
• Less expensive to manufacture

Inset:

• Door sits flush INSIDE the frame opening
• 1/16" to 1/8" reveal (gap) on all four sides
• Most refined look
• Requires precise construction and tight tolerances
• Common in fine furniture, traditional cabinetry
• Most expensive style

Sizing math by style

For full overlay on face frame:

• Door width = opening width + (2 × overlay amount) - 1/8" (door-to-door gap)
• Door height = opening height + (2 × overlay amount) - 1/8"
• Overlay amount typically 1/2" per side
• Door covers most of the face frame

For full overlay on frameless:

• Door width = opening width + 1" (1/2" overlay each side)
• Door height = opening height + 1"
• 1/8" door-to-door gap on adjoining doors

For partial overlay:

• Door width = opening width + 2 × overlay - 1/16"
• Overlay typically 3/8" or 1/2"
• More frame visible between doors

For inset:

• Door width = opening width - 1/8" (1/16" reveal each side)
• Door height = opening height - 1/8"
• All four sides have small reveals

Standard cabinet dimensions

Standard counter height is 36" (countertop + base). Wall cabinets typically start 18" above counter.

Door size considerations

Maximum recommended door dimensions (without center stiles for support):

Larger doors:

• Sag under their own weight (especially solid wood)
• Stress hinges more
• Need heavier-duty hinges
• May require additional supports

For large openings, split into two doors with a center divider rather than one massive door.

Hinge selection

The cabinet construction and door style determine hinge type:

Concealed European hinges (cup hinges):

• 35mm cup drilled into back of door
• Adjustable in 3 axes
• Standard for frameless cabinets
• Works on face frame with proper baseplate
• Most common modern hinge

Concealed face-frame hinges:

• Designed for face-frame cabinets
• Adjustable
• Hidden from outside
• Specifically rated for overlay amount

Butterfly hinges / decorative hinges:

• Visible from outside
• Common in inset doors
• More traditional appearance
• Various decorative styles

Cup hinge overlay options:

• 110° cup hinge: standard, fits 95% of applications
• 165° cup hinge: pull-out drawers behind, accessibility
• Soft-close: integrated damping (essentially mandatory now)
• Push-to-open: handleless doors

Modern hinges are usually adjustable in 3 axes:

• Vertical (up/down)
• Horizontal (in/out)
• Lateral (left/right)

This adjustment allows fine-tuning after installation — about 5mm of movement in each direction.

Material choices for doors

For paint-grade doors, MDF is often preferred because it doesn’t have grain to telegraph through paint. For stain-grade doors, solid wood or veneered plywood is necessary.

Wood movement considerations

Wood expands and contracts with humidity changes — about 0.25% per 1% RH change. For a 24" wide solid wood door, this can mean 1/8" of movement over the seasonal range.

Implications:

• Solid panel doors: float the panel in grooved frame (not glued)
• Inset doors: leave 1/8" reveal to accommodate movement
• Tight construction: only viable in climate-controlled rooms
• Adjustable hinges: allow recalibration as cabinets age
• Dry climate: less movement, tighter tolerances possible
• Humid climate: more movement, wider reveals needed

In kitchens with significant humidity (above sinks), even tight reveals can bind.

Door style variations

Beyond overlay choice, doors come in many styles:

Shaker: simple 5-piece frame with flat panel; most popular modern style

Raised panel: ornate, traditional; raised center panel

Slab: completely flat; modern, minimalist

Beadboard: vertical grooves; cottage style

Glass front: clear, frosted, or seeded glass insert

Mullion (multi-pane glass): divided glass panes; traditional

Open shelving: no door at all; trendy but exposes contents

Cost implications

Cabinet costs vary by style and material:

The door style and material dominate cost. Slab thermofoil doors are cheapest; raised-panel solid wood with intricate details is most expensive.

Common cabinet door mistakes

1. Wrong overlay calculation: doors don’t fit; major rework needed
2. No allowance for wood movement: doors bind in humid weather
3. Mismatched hinges: face-frame hinges on frameless box
4. Hinges too small: drooping doors
5. Inadequate panel float: panels split from movement restriction
6. Wrong door order: ordering before measuring cabinets
7. Cheap doors on quality cabinets: undermines the investment
8. No consideration of hardware: handles interfere with door operation
9. Tight reveals in humid kitchen: binding during summer
10. Custom doors without standard sizes: replacement becomes impossible

Bottom line

Cabinet doors come in three styles: full overlay, partial overlay, and inset. Face-frame cabinets have a 1.5" frame at the front; frameless cabinets don’t. Full overlay covers most of the frame; partial overlay shows more frame; inset sits flush inside the frame with 1/16"-1/8" reveal. Door width = opening + (2 × overlay) - 1/8" for full overlay; door = opening - 1/8" for inset. Wood movement requires 1/8" gaps for inset doors. Modern concealed (cup) hinges are 35mm and adjustable in 3 axes. Solid wood looks best but moves with humidity; MDF and engineered materials are stable but less beautiful. For most homes, shaker-style full-overlay doors strike the best balance of cost, appearance, and practicality.