Wainscoting Calculator

Calculate wainscoting panels and rail or cap molding for a wall installation. Supports any panel width and wall height.

Wainscoting Panels
— panels
Rounded up.

Usage Tip

Standard wainscoting height is 32 to 36 inches, or about one-third of the wall height for taller rooms.

THE MATH
panels = round up( wall length × 12 ÷ panel width × (1 + waste ÷ 100) )
rail / cap = wall length
Wainscoting covers the lower wall with panels, topped by a cap rail. Panel count comes from the wall length and panel width, and the cap rail runs the full length.
Enter the wall length, the wainscoting height, the panel width, and a waste percentage.
The result rounds up to whole panels, with rail and cap molding equal to the wall length.
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.