Cabinet Door Size Calculator – Metric & Imperial Guide

🚪 Cabinet Door Size Calculator

Calculate exact cabinet door dimensions in metric or imperial — supports full overlay, half overlay & inset styles

📏 Unit System
Quick Presets
📐 Door Mounting Style
Full Overlay: Door covers the full face frame or cabinet side. Add 25mm (1") to each side of the opening width and height.
📏 Cabinet Opening Dimensions
✅ Calculated Door Dimensions
📊 Standard Overlay Allowances
+25mm
Full Overlay Each Side
+13mm
Half Overlay Each Side
−2mm
Inset Gap All Sides
2–3mm
Door Gap Between Pair
3mm
Hinge Side Reveal
19mm
Typical Panel Thickness
35mm
Std Hinge Cup Bore
±1.5mm
Fitting Tolerance
📋 Standard Cabinet Door Sizes (Metric)
Cabinet Type Opening Width (mm) Door Width Range (mm) Typical Height (mm) Notes
Base Single300–600350–650700–750Full overlay most common
Base Double600–1200325–625 each700–750Subtract 2mm centre gap
Wall Single300–600350–650400–800Full or half overlay
Wall Double600–1000325–525 each400–8002mm gap between doors
Tall / Pantry300–600350–6501800–2400Often paired top & bottom
Corner Cabinet400–500400–525700–750Inset or partial overlay
Bathroom Vanity200–500225–550450–750Full overlay standard
Oven Housing560–600585–625550–600Check appliance clearance
🔄 Overlay Style Comparison
Style Formula (each door) Gap from Frame Look Best For
Full OverlayOpening + 25mm each sideCovers frame fullyModern / SlabFrameless cabinets
Half OverlayOpening + 13mm each sideCovers half frameTraditionalFramed cabinets
InsetOpening − 2mm each sideFlush with frameClassic / ShakerHigh-end fitted kitchens
Beaded InsetOpening − 3mm each sideBead detail frameHeritageTraditional kitchens
📏 Metric to Imperial Quick Reference
Metric (mm) Imperial (inches) Common Use Closest Std Imperial
300mm11⅞"Narrow wall unit12"
400mm15⅝"Small base door16"
450mm17¾"Corner door18"
500mm19⅝"Wall & base units20"
600mm23⅝"Standard base single24"
700mm27 "Wide wall unit28"
720mm28׀"Base door height28½"
900mm35/16;"Wide double opening36"
💡 Sizing Tips
Tip 1 — Always measure the opening, not the old door. Old doors may have been cut incorrectly. Measure the cabinet frame opening width and height at three points (top, middle, bottom and left, centre, right) and use the smallest measurement to ensure a proper fit.
Tip 2 — Double-check your overlay style before ordering. Full overlay adds approximately 25mm on each side; half overlay adds about 13mm. Inset doors are cut 2–3mm smaller than the opening on all sides for clearance. Getting this wrong means doors that don't fit or look misaligned.

Finding the right sizes for Cabinet Door openings is not something easy… There lacks any general rule for that. Various areas use their own standards for Cabinet Door sizes, and separate makers commonly choose themselves about the desired features.

When one designs the kitchen, one must consider also the different opinions, that change forever that, what one sees as “average”.

How to Measure Cabinet Door Sizes

Here is where it is possible to start: take a flexible measure and estimate the width and the height of the opening in the cabinet, shown in inches. Measure from the top until the bottom, mind to accuracy and note all values. The main mistake that folks do?

They measure the current door instead of the real opening. After you have those numbers set, think about the overlay, that is, how the door covers past the opening or the frame of the cabinet. The most many doors cover around half of inch at every side, but this depends on the style of overlay, that you will choose.

For frameless European-style cabinets with full surface hinges, one usually counts little space between nearby doors. That space one sets at one eighth of inch. Like this for 18-inch cabinet the door will be broad in 17 inches and seven eighths.

For 36-inch cabinet split in two doors, each of them will be around 17 inches and seven eighths. The gap at the edges up is almost one tenth of inch.

We pass to a real sample. Assume, that the opening of your cabinet measures 30 inches broad and 24 inches high; like this the width of the door will result around 16 inches and three eighths, while the hieght will be about 26 inches and half.

When you change old doors, the simplest way is measure that, what already is hear. Simply match the widths of both doors. If the whole passes the inside number in one inch, that shows half overlay.

If it passes in one and half inches? So deal about three-quarter overlay.

Sizes of doors usually happen in steps of 16 inches, and the makers do them with a gap of plus or minus in thirty-second part of inch. Orders for doors more than 50 inches high automatically get a center strip, unless you point otherwise. The price depends on the square feet, with minimum of 1.75 square feet for any size.

Many folks do not like to make doors broad more than 23 inches, unless deal about full-high doors for pantries, those deserve to go until 25 inches. Balance plays a role also. While you arrange several units of cabinets one after the other, equal widths of the outsides give the neatest look.

Three-quarter inch of thickness for the frame of Cabinet Door is the usual standard. Cabinet Door in Shaker style seems more helpful and open than that with raised panel, that looks more heavy. And if the average sizes do not work for odd form ofcabinets, then homemade doors deserve attention.

Cabinet Door Size Calculator – Metric & Imperial Guide

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