Free estimate — verify against local code before building
Cabinet Door Size Calculator
Build a cabinet run schedule with a cut list, hinge and pull counts, material overage, and optional 5-piece stile/rail/panel cut sizes.
What this calculator includes
This calculator turns a field-measured row of up to 10 cabinet openings into a complete door schedule: each opening gets its own finished door size using an editable overlay or inset reveal and center gap (set once for the whole run or overridden per opening), then the schedule totals door area, sheet-material overage, hinge count using a documented door-height rule, and pull count into a copyable cut list. An optional 5-piece (stile/rail/panel) mode adds the rail, stile, and panel cut sizes a cabinetmaker takes to the table saw for a chosen opening, without claiming a universal hinge-boring or fabrication tolerance.
Next step in your project
Place the cabinet work in the complete kitchen budget
Add cabinet, countertop, flooring, backsplash, appliance, trade-work, permit, and contingency scenarios.
Open Kitchen Remodel Cost Calculator →How to use this cabinet door size calculator
- 01
Measure each opening
Measure width and height at several points per opening and use the cabinet maker's method for an out-of-square opening. Add one row per opening, up to 10.
- 02
Choose the fit
Select overlay when the door covers the face-frame or box edge, or inset when the door fits inside the opening, either for the whole run or per opening.
- 03
Set reveals and pairs
Enter the approved overlay or reveal, choose one or two doors per opening, and enter the intended center gap for a pair.
- 04
Read the cut list
Copy the generated cut list, with each door's width and height in feet-inch-fraction form, straight to the shop floor.
- 05
Add 5-piece cut sizes if building doors
Turn on 5-piece mode and enter the stile/rail width and tenon length to get rail, stile, and panel cut sizes for the selected opening.
- 06
Verify the hardware
Confirm hinge cup, boring setback, opening angle, plate height, door thickness, and hinge count before fabrication.
Worked example
Example: 5-piece rail and panel cut sizes for a 15 x 30 in door
A 15 in by 30 in finished door with 2-1/4 in stiles/rails and a 3/8 in tenon needs rails cut to 15 - 2 x 2.25 + 2 x 0.375 = 11.25 in. The panel width is based on the 10.5 in opening between stiles, not the rail including its tenons: 10.5 + 0.5 in for two tongues - 0.25 in clearance = 10.75 in. Panel height is 25.5 + 0.5 - 0.25 = 25.75 in.
Practical buying and overage guidance
Create a labeled opening schedule and confirm whether the supplier wants finished door size or opening size. Verify grain direction, edge profile, finish, pair gap, hinge boring, pulls, and replacement-door return policy before ordering.
Scope and safety note
Fabrication-planning estimate only. Cabinet construction, squareness, door thickness, hardware geometry, boring patterns, appliance clearances, and shop tolerances must be verified for the exact cabinet and hinge system.
Continue the project
Frame & Finish a Room
Plan wall framing, insulation, drywall, paint, flooring, baseboard, trim, materials, supplies, and contractor pricing in one workflow.
Open the project workflow →Calculation sources and review
Primary references and formula assumptions are linked so you can verify them against the selected product, supplier, and adopted local requirements.
Internal formula and test check recorded July 15, 2026. What this review covers
Formula version 2026-07-14.1
- Freud rail-and-stile cabinet door guide (opens in a new tab)
Manufacturer geometry for rail length and raised-panel sizing from finished door dimensions.
- AWI standards resources (opens in a new tab)
Fabrication tolerances and quality requirements, including stile/rail widths and panel-groove practice, depend on the selected cabinet standard and shop.
Frequently asked questions
How is an overlay cabinet door size calculated?
For a full perimeter overlay, twice the entered overlay is added to both opening dimensions. Paired doors then split the covered width after subtracting the center gap.
How is an inset cabinet door size calculated?
Twice the reveal is subtracted from opening width and height. Paired doors also subtract the center gap before dividing the width in half.
How many hinges does a cabinet door need?
This calculator uses a common shop rule of 2 hinges per door under 40 in tall and 3 hinges at 40 in or taller. Verify against the door's actual weight, width, and the selected hinge maker's load rating.
How are 5-piece door rail and panel sizes calculated?
Rail cut length is the door width minus twice the stile width, plus two tenon lengths (doorW − 2×stileW + 2×tenon). Panel width and height add a 1/4 in tongue on each edge and subtract a documented expansion gap; see the worked example for the exact convention.
Can I use one measurement for every cabinet?
No. Openings and face frames can vary or be out of square. Measure and label each opening in its own row, then follow the door supplier's required precision and tolerances.
Does this calculate hinge-boring locations?
No. Boring pattern, setback, plate height, and clearance depend on the exact hinge, door thickness, weight, and cabinet construction.