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Wainscoting Calculator — Equal Panel Spacing, Rails, Stiles & Cost

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Wall width (in) Wainscot height (in) Stile width (in) Target clear panel width (in) Horizontal rail rows Top + bottom = 2; add intermediate rails if needed.Stock molding/board length (ft) Waste allowance (%) Price per stock length (optional)

Calculated result

6 equal panels · 20.5 in clear width

7 vertical stiles

Vertical stile length: 21 ft

Horizontal rail length: 24 ft

Total with 10% allowance: 49.5 ft

7 × 8 ft stock lengths

Optional stock price not entered.

Show the working

1. Approximate whole panel count from wall, stile and target width = 6.
2. Exact panel width = (144 − 7 × 3) ÷ 6 = 20.5 in.
3. Linear footage = (7 × 3) + (2 × 12) = 45 ft.
4. Apply 10% allowance and round 8 ft stock lengths up to 7.

This equal-panel model is for one uninterrupted wall span. Treat doors, corners and built-ins as layout boundaries when they interrupt the repeated pattern.

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