Cabinet Door Calculator
The size to make overlay or inset cabinet doors from the opening, the overlay or reveal, and the gap between a pair of doors.
Result
25 in
Sizes are exact; widths are read to the nearest sixteenth of an inch.
- Door height
- 31 in
- Width covered by the doors
- 25 in
- Doors to make
- 1
https://calcgallery.com/lumber-carpentry/cabinet-door-calculator/
Results are estimates for planning only. Actual needs vary with site conditions, products and workmanship. Always confirm quantities with your supplier and follow local building codes and manufacturer instructions. Read the full disclaimer
How to use the Cabinet Door Calculator
- Measure the opening in the face frame or cabinet box, width and height.
- Choose overlay or inset, and one door or a pair.
- Enter the overlay your hinges give, or the reveal you want around an inset door, and the gap between a pair.
- Read the width and height to make each door.
How it is calculated
overlay: door across = opening width + 2 × side overlay door height = opening height + 2 × top and bottom overlayinset: door across = opening width − 2 × reveal door height = opening height − 2 × revealpair: each door = (door across − gap) ÷ 2Sizes are shown to the nearest sixteenth of an inch in imperial and in millimetres in metric.
Before cutting
Measure every opening; face frames are rarely identical, and a door that fits one may not fit its neighbour. For a run of cabinets with a continuous line of doors, set the gap between neighbouring doors the same as the gap within a pair so the reveals line up. Drawer fronts follow the same arithmetic but are sized to the drawer opening, and frame-and-panel parts (stiles, rails and the panel) are a further step this page does not take.
With your numbers
- Width covered = 25 in
- Door = 25 in × 31 in
Quick reference
Sizes are exact; widths are read to the nearest sixteenth of an inch.
| Job | Door width |
|---|---|
| 24 × 30 in, 1/2 in overlay | 25 in |
| 24 × 30 in pair, 1/8 in gap | 12 7/16 in |
| 35 1/4 × 30 in pair, 1 1/4 in overlay | 18 13/16 in |
| 15 × 30 in inset | 14 7/8 in |
| 30 × 30 in inset pair | 14 7/8 in |
| 60 × 75 cm pair, 13 mm overlay | 311.5 mm |
Common questions about the Cabinet Door Calculator
- How big should an overlay cabinet door be?
- The opening plus the overlay on each edge. A 24 × 30 inch opening with a 1/2 inch overlay all round takes a door 25 × 31 inches. For a pair, take the gap off that width and halve it: two doors 12 7/16 inches wide with a 1/8 inch gap.
- How do I size an inset door?
- Take the reveal off every edge. A 15 × 30 inch opening with a 1/16 inch reveal takes a door 14 7/8 × 29 7/8 inches. Many makers build inset doors to the opening and plane them to fit, which gives the same size by a different route.
- Where does the overlay figure come from?
- From the hinges. Concealed hinges are sold for a particular overlay, and face frame hinges are made for one too, so read it from the hinge maker's specification before cutting. The page does not choose an overlay.
- Can the side and top overlays differ?
- Yes. Enter them separately; stacked or adjoining cabinets often have a smaller overlay where two doors meet over a shared frame member.