Wainscoting Calculator

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Construction

Calculate rails, stiles, panels, and moulding needed for wainscoting installation.

Formula

Bays = ⌈perimeter × 12 / (panel width + stile width)⌉; Stiles = bays + 1; 2 rails (top + bottom)
  • Standard wainscoting height: 32–36 in.
  • Panel width: 16–24 in is typical for balanced proportions.
  • Add 10–15% to lumber quantities for waste and cuts.

52 ft perimeter, 36 in high, 24 in panels, 3 in stiles/rails

Inputs
  • Room Perimeter (wainscoted): 52 ft
  • Wainscoting Height: 36 in
  • Target Panel Width: 24 in
  • Stile Width: 3 in
  • Rail Width: 3 in

Perimeter: 624 in. Bays: ⌈624/(24+3)⌉ = 24. Stiles: 25. Rails: 2×52=104 LF.

Frequently asked questions

What is the difference between rails and stiles?
Rails are the horizontal members (top and bottom of each panel). Stiles are the vertical members that separate panels. Together they form the frame around each raised or inset panel.