Cabinet Door Size Calculator

Inputs

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Overlay doors cover past the opening. Inset doors fit inside the opening with a reveal around the edges.
Measured cabinet opening width before applying overlay or inset reveals.
in
Measured cabinet opening height before applying overlay or inset reveals.
in
Door coverage beyond the opening on the left side.
in
Door coverage beyond the opening on the right side.
in
Door coverage beyond the opening at the top.
in
Door coverage beyond the opening at the bottom.
in
Gap between the two doors in a paired opening.
in

Results

Default result
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Door width (W_door)
15.438 in
Pass

each of two doors

Also computed

Door height (H_door) Pass 25 in

overlay pair

Door count (N) 2 doors

Total slab width (W_total) 30.875 in

two slabs, gap not included

Center gap used (G_c) Pass 0.125 in

between paired doors

Net width adjustment (dW) 1 in

net overlay: added to the opening before splitting paired doors

Net height adjustment (dH) 1 in

overlay added vertically

Cabinet door preview: overlay pairCabinet door sizing previewoverlay pairOpeningDoor eachTotal door width plus center gapcenter gapPreview shows the sizing convention only; hinge bore, edge profile and out-of-square correction are separate shop decisions.
Method notes 4 notes
  • door width each = (opening width + left overlay + right overlay - center gap) / 2
  • door height = opening height + top overlay + bottom overlay
  • Paired doors split the net slab width after subtracting the center gap. The center gap itself is not part of either door slab.
  • Confirm hinge overlay, cup bore location, pull clearance, edge profile, finish thickness and out-of-square openings before cutting finished doors.

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