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Cabinet door sizing and cut list

Cabinet door finished sizing

Order or check finished cabinet doors from the measured opening and the selected hinge fit.

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Example inputs · U.S. customary units

Two overlay doors on a 30 × 28 in opening. Confirm door fit, overlay and gaps from your construction and hinge instructions. These values are illustrative.

Example: 30 in.

Example: 28 in.

Example: 2 doors.

Example: 0.125 in.

Example: 0.5 in.

Results

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Enter your values, then choose Calculate. Your results will appear here.

How to use cabinet door finished sizing

What this calculation does

Door sizing converts an opening into equal overlay or inset door outside dimensions with explicit outside and center gaps.

Measure the opening, select overlay or inset, count equal doors, and enter only the clearance fields for that fit.

Enter the measurements

  1. Door fit: Choose overlay or inset; only its matching edge input is used.
  2. Opening width: Measure the clear opening width.
  3. Opening height: Measure the clear opening height.
  4. Equal doors across the opening: Count equal doors across the opening.
  5. Gap between doors: Enter the gap between adjacent doors.
  6. Overlay per outside edge: For overlay mode, use overlay at each outside edge.
  7. Inset gap per outside edge: For inset mode, enter the outside inset gap.

Formula and variables

Overlay overall width = opening width + 2 × overlay. Inset overall width = opening width − 2 × edge gap. Each door width = (overall width − (door count − 1) × centre gap) ÷ door count. Height adds the two overlays or subtracts the two inset gaps.

Overlay adds twice the overlay to overall width and height; inset subtracts twice the edge gap. Center gaps are deducted once between neighboring doors.

Read the result

Two overlay doors are each 15.4375×29 in for the stated 30×28 in opening and gaps.

Worked example

Inputs: 30 × 28 in opening, two equal doors, 0.5 in overlay per outer edge, 0.125 in centre gap

  1. Overall width = 30+2×0.5 = 31 in; each width = (31−0.125)÷2 = 15.4375 in.
  2. Height = 28+2×0.5 = 29 in.

Expected result: each door 15.4375 × 29 in

Frequently asked questions

Are the sample overlay values standard hinge clearances?

No. Confirm finished dimensions and overlay against the cabinet and selected hinge.

Does the paired page use the door size for its frame parts?

The second form is separate; enter its finished door dimensions and its own joinery values.

Conditions, presets and technical notes

Finished outside sizes for equal doors. Choose gaps and overlay from the actual construction and current hinge instructions. These are illustrative defaults, not standard hinge clearances. Add rough-machining allowance separately. A single door has no centre gap deduction.

Rail, stile and panel cut list

Prepare frame-and-panel door parts from a finished outside size and measured tongue and groove dimensions.

Try the calculation

Example inputs · U.S. customary units

An 18 × 30 in frame-and-panel door. Tongue, groove and clearance values describe this example. Measure your tooling and construction before cutting.

Example: 18 in.

Example: 30 in.

Example: 2 in.

Example: 2 in.

Example: 0.375 in.

Example: 0.375 in.

Example: 0.125 in. The combined clearance across both opposite edges, deducted once from width and once from height.

Results

Ready to calculate

Enter your values, then choose Calculate. Your results will appear here.

How to use rail, stile and panel cut list

What this calculation does

A frame-and-panel cut list derives stiles, rails and a floating panel from a finished door size and declared joinery dimensions.

Enter finished door dimensions, stile and rail widths, tongue length, groove depth and the total panel clearance across opposite edges.

Enter the measurements

  1. Finished door width: Enter the finished outside door width.
  2. Finished door height: Enter the finished outside door height.
  3. Stile width: Use the width of each full-height stile.
  4. Rail width: Use the width of each top and bottom rail.
  5. Tongue length at each rail end: Enter the tongue length at each rail end.
  6. Panel groove depth: Enter groove depth for the panel.
  7. Total panel clearance in each dimension: Enter combined clearance across both panel edges.

Formula and variables

Stile = door height. Rail = door width − 2 × stile width + 2 × tongue length. Panel width = door width − 2 × stile width + 2 × groove depth − total clearance; use rail width for panel height.

Stiles equal door height. Rails add two tongues after subtracting two stile widths; panel dimensions include two groove depths and subtract the combined clearance once.

Read the result

The entered 18×30 in door needs two 30 in stiles, two 14.75 in rails and a 14.625×26.625 in panel blank.

Worked example

Inputs: 18 × 30 in door, 2 in rails/stiles, 0.375 in tongue and groove depth, 0.125 in combined panel clearance

  1. Rail = 18−2×2+2×0.375 = 14.75 in; stiles = 30 in.
  2. Panel width = 18−4+0.75−0.125 = 14.625 in; height = 30−4+0.75−0.125 = 26.625 in.

Expected result: 30 in stiles, 14.75 in rails, 14.625 × 26.625 in panel

Frequently asked questions

Does the panel clearance apply at each edge?

The entered value is the combined clearance across the two opposite edges in each dimension.

Does this set a router or cope profile?

No. Match actual tooling and make a test piece before the production cut.

Conditions, presets and technical notes

Two full-height outer stiles and two rails between them, with the declared tongue and panel groove. Clear panel openings must stay positive. Tongues must fit the stated groove and the groove must remain within the frame. Real router profiles, cope lengths and movement allowances require a test piece and the product instructions. Do not glue a solid floating panel immovably into its frame.