🚪 Cabinet Door Size Calculator
Calculate exact cabinet door dimensions in metric or imperial — supports full overlay, half overlay & inset styles
| Cabinet Type | Opening Width (mm) | Door Width Range (mm) | Typical Height (mm) | Notes |
|---|---|---|---|---|
| Base Single | 300–600 | 350–650 | 700–750 | Full overlay most common |
| Base Double | 600–1200 | 325–625 each | 700–750 | Subtract 2mm centre gap |
| Wall Single | 300–600 | 350–650 | 400–800 | Full or half overlay |
| Wall Double | 600–1000 | 325–525 each | 400–800 | 2mm gap between doors |
| Tall / Pantry | 300–600 | 350–650 | 1800–2400 | Often paired top & bottom |
| Corner Cabinet | 400–500 | 400–525 | 700–750 | Inset or partial overlay |
| Bathroom Vanity | 200–500 | 225–550 | 450–750 | Full overlay standard |
| Oven Housing | 560–600 | 585–625 | 550–600 | Check appliance clearance |
| Style | Formula (each door) | Gap from Frame | Look | Best For |
|---|---|---|---|---|
| Full Overlay | Opening + 25mm each side | Covers frame fully | Modern / Slab | Frameless cabinets |
| Half Overlay | Opening + 13mm each side | Covers half frame | Traditional | Framed cabinets |
| Inset | Opening − 2mm each side | Flush with frame | Classic / Shaker | High-end fitted kitchens |
| Beaded Inset | Opening − 3mm each side | Bead detail frame | Heritage | Traditional kitchens |
| Metric (mm) | Imperial (inches) | Common Use | Closest Std Imperial |
|---|---|---|---|
| 300mm | 11⅞" | Narrow wall unit | 12" |
| 400mm | 15⅝" | Small base door | 16" |
| 450mm | 17¾" | Corner door | 18" |
| 500mm | 19⅝" | Wall & base units | 20" |
| 600mm | 23⅝" | Standard base single | 24" |
| 700mm | 27 " | Wide wall unit | 28" |
| 720mm | 28׀" | Base door height | 28½" |
| 900mm | 35/16;" | Wide double opening | 36" |
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.

