Door Sizing and Materials
Enter finished dimensions directly, or calculate them from a cabinet opening.
Values use the selected measurement unit. Review actual hardware specifications before cutting material.
Formula Used
This tool sizes a four-piece frame with two stiles and two rails. It calculates each door first. It then multiplies the cut list for all requested openings.
Double-door leaf width: (covered width − center gap) ÷ 2.
Rail cut length: Finished door width − (2 × stile width) + (2 × joint allowance).
Panel width: Finished door width − (2 × stile width) + (2 × groove depth).
Panel height: Finished door height − (2 × rail width) + (2 × groove depth).
Stock length includes rail and stile cuts, saw kerfs, and the selected waste percentage. Board-foot estimates use the entered frame thickness and the actual stile and rail widths.
How to Use This Calculator
- Choose inches or millimetres before entering dimensions.
- Select opening sizing for new doors or direct sizing for replacements.
- Choose full overlay, half overlay, or inset mounting.
- Enter reveal, overlay, and center gap values for your hardware plan.
- Set stile, rail, groove, and joint dimensions from your router-bit system.
- Enter material prices to estimate lumber, panel, and hinge costs.
- Calculate, inspect the cut list, then download CSV or PDF records.
Example Data Table
A single full-overlay door uses an 18 × 30 inch opening. The frame uses 2.25 inch stiles and rails with 0.50 inch overlay.
| Input | Example value | Calculated output |
|---|---|---|
| Cabinet opening | 18 × 30 in | — |
| Overlay and reveal | 0.50 in and 0.125 in | Finished door: 18.75 × 30.75 in |
| Stiles and rails | 2.25 in wide | Rail cut: 15.25 in with 0.50 in tenons |
| Groove depth | 0.25 in | Panel: 14.75 × 26.75 in |
| Waste allowance | 12% | Purchase stock includes setup and trim waste |
Planning Quaker Cabinet Doors
Quaker cabinet doors use a clean framed look. They have vertical stiles, horizontal rails, and a center panel. The style works in traditional, farmhouse, and transitional kitchens. Good planning prevents uneven gaps and wasted lumber.
Start with the cabinet opening
Measure each opening in several places. Cabinets are not always square. Use the smallest width and height for inset doors. Overlay doors need reliable face-frame measurements too. Record whether nearby doors share a center stile. That detail changes the overlay plan.
Choose the mounting approach
Full-overlay doors cover most of the cabinet face. Half-overlay doors share a face-frame member. Inset doors sit within the opening. Each method requires different clearance. Keep reveals consistent across a complete run. Small differences are obvious after installation.
Balance frame proportions
Stiles and rails should suit the door size. Narrow members can look light. Very wide members can crowd the panel. A common starting point is 2.25 inches. Larger doors may need wider rails. Match the frame shape to your existing cabinet design.
Allow for panel movement
Solid wood panels expand across the grain. Do not glue a solid panel inside every groove. Leave enough room for seasonal movement. Plywood and MDF move less. They may be secured more firmly when the construction method allows it.
Plan cuts before milling
Mill lumber flat and straight first. Cut stiles and rails a little long. Confirm a test joint before final cuts. Include saw kerf and defects in the stock plan. Keep matching parts together. This improves grain continuity and colour balance.
Check hardware early
Hinge cups, overlays, and mounting plates affect the final fit. Verify the hinge maker’s required clearance. Taller doors often need more hinges. Dry-fit the door before applying finish. Make final adjustments slowly. Small changes preserve clean, even reveals.
Use test pieces first
Create a test frame from offcuts before touching final stock. Machine one rail and one stile. Assemble them around a panel scrap. Check the profile, groove fit, and joint depth. Measure the diagonal corners. Equal diagonals show a square frame. Adjust fence positions before milling matching parts. Label every piece as it leaves the saw. This simple trial reduces expensive errors, especially when using hardwood, figured lumber, or unfamiliar router cutters. Work slowly today.
Frequently Asked Questions
1. What is a Quaker cabinet door?
It is a framed cabinet door with simple stiles, rails, and a recessed, raised, or inserted center panel. The clean geometry resembles classic Shaker-inspired construction.
2. Should I choose full overlay or inset doors?
Choose full overlay for broad face coverage and modern hardware options. Choose inset for a furniture-like appearance. Inset work needs more precise cabinet openings and consistent clearance.
3. Why does the rail cut include joint allowance?
Rails extend into the stiles when using stub tenons or cope-and-stick joints. Adding the allowance makes the visible finished frame width correct after assembly.
4. How wide should cabinet door stiles be?
Many framed doors use stiles between 2 and 2.5 inches. Use wider members for tall or heavy doors. Match nearby doors for a unified appearance.
5. Does the calculator account for panel expansion?
It adds groove depth to the panel size. It does not replace species-specific expansion planning. Increase clearance for solid wood panels in changing humidity conditions.
6. What waste percentage should I use?
Use 10% for straight, defect-free stock and repeated doors. Use 15% to 25% for figured lumber, colour matching, bowed boards, or unfamiliar joinery.
7. Can I enter millimetres?
Yes. Select millimetres before entering values. The tool converts calculations internally and returns results in millimetres. Keep all entered values in the same unit.
8. Why is my calculated panel larger than the frame opening?
The panel enters grooves on all four sides. Therefore, its cut size includes twice the groove depth in both width and height.
9. How many hinges does a cabinet door need?
Two hinges suit many short doors. Taller doors normally need three or four. Door weight, material, and hinge manufacturer guidance can require more.
10. Does this replace a full shop drawing?
No. It provides a planning cut list and estimate. Confirm cabinet squareness, bit profiles, hinge clearances, stock thickness, and local construction requirements before cutting.
11. Can I use this for glass-panel doors?
Yes. Select the glass or insert panel option. Measure glazing rebates and safety requirements separately. Use appropriate retainers and verify the glass thickness with your supplier.