Raised Panel Calculator

Enter door size, rails, stiles, grooves, and waste. Get panel cuts, material use, and cost. Export clean results for workshop planning and client estimates.

Raised Panel Input Form

Formula Used

Panel width = Door width - 2 × stile width + 2 × groove depth - panel clearance.

Panel height = Door height - top rail width - bottom rail width + 2 × groove depth - panel clearance.

Rail cut length = Door width - 2 × stile width + 2 × tenon length.

Board feet = total rough area × material thickness ÷ 144.

Total cost = material cost + finish cost + overhead cost.

How to Use This Calculator

  1. Enter the final raised panel door width and height.
  2. Select the unit used in your shop drawing.
  3. Add stile, rail, groove, tenon, and clearance values.
  4. Enter material thickness, waste, finish rate, and cost details.
  5. Press the calculate button to see cuts and costs.
  6. Download the CSV or PDF for records and shop planning.

Example Data Table

Door Size Stile Top Rail Bottom Rail Groove Panel Clearance Waste
18 × 30 in 2.25 in 2.25 in 2.75 in 0.375 in 0.125 in 12%
20 × 34 in 2.5 in 2.5 in 3 in 0.375 in 0.125 in 15%
16 × 28 in 2 in 2.25 in 2.5 in 0.25 in 0.1 in 10%

Raised Panel Planning Guide

A raised panel door needs balanced frame parts and a correctly sized center panel. Small errors can create tight joints, loose panels, or visible gaps. This calculator helps plan those details before cutting expensive stock. It accepts the final door size, stile width, rail sizes, groove depth, tenon length, clearance, thickness, waste, and cost data.

Why Accurate Panel Sizing Matters

The center panel should float inside the frame. Wood moves across the grain as humidity changes. A panel that is too large can bind and push the frame apart. A panel that is too small can rattle or expose an edge. The groove depth and clearance fields help you keep that movement space under control.

Frame Cut Planning

Stiles normally run the full door height. Rails fit between the stiles, but many joinery methods add tenons at both rail ends. The calculator separates visible door size from rail cut length. That makes the output useful for cope and stick cutters, tongue and groove frames, and simple shop layouts.

Material and Cost Control

Raised panel doors often use wider boards than flat panels. Waste can increase when boards must be matched for grain and appearance. This tool estimates frame board feet, panel board feet, waste-adjusted material, finishing area, finishing cost, overhead, and total project cost. It also reports cost per door, which helps compare several design options.

Best Shop Use

Use measured final door dimensions, not cabinet opening dimensions. Check your hinge overlay, reveal, and door gap before entering values. Enter the actual cutter groove depth and tenon length used in your setup. If you plan to raise the panel on both faces, keep the thickness field accurate. Save the CSV for cut lists. Save the PDF for client notes or workshop records.

The result should still be checked against your tools. Router bits, shaper cutters, saw kerfs, and sanding steps can change final fit. Test cuts are wise before production. The calculator gives a strong planning number, then your shop setup confirms the final cut. Review the output with your lumber list. Choose straighter stock for stiles. Use stable, attractive boards for visible panels. Label each part before milling. Store matching pieces together until assembly starts.

Frequently Asked Questions

What is a raised panel calculator?

It estimates center panel size, rail length, stile length, material use, waste, and project cost for raised panel doors.

Can I use centimeters or millimeters?

Yes. Select your preferred unit before calculating. The tool converts values internally and displays the result in the selected unit.

What is panel clearance?

Panel clearance is the small movement space left inside the frame groove. It helps the center panel expand without forcing the frame apart.

Why is groove depth added to panel size?

The panel sits inside grooves on both sides. Adding groove depth helps calculate the actual blank size needed before assembly.

What is rail tenon length?

Rail tenon length is the extra joinery length added to each rail end. It is included in the rail cut length.

Does this replace a test cut?

No. It gives strong planning values. You should still make test cuts because cutters, sanding, and joinery setups can change fit.

How is board feet calculated?

The calculator multiplies rough area by material thickness, then divides by 144. Waste is added after the base board feet estimate.

Can I export the result?

Yes. After calculation, use the CSV button for spreadsheet records or the PDF button for shop notes and client files.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.