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Wainscoting Calculator

This wainscoting calculator will help you calculate the measurements and dimensions concerning your DIY wainscoting or board and batten project. We also explain the basics of wainscoting installation and some other information you might find useful.

Leave at zero to use the dimensions above.
Extra to cover offcuts, breakage and mistakes.
Leave at zero to skip the costing.
Clear
Boards needed9182.29 to cover it, plus 10% waste
Linear length728 ft221.894 m of board in total
Each board covers2.3333 sq ft3.5 in effective width × 8 ft
Area to cover192 sq ft
Rows of board42across 12 ft
Board feet212.33figured at 1 in nominal thickness

The method

boards = covered width ÷ board coverage, plus waste

Face width, not nominal width

A “6-inch” deck board is 5½ inches across, and if you leave a ¼-inch drainage gap each board accounts for 5¾ inches of deck. Working from the nominal 6 inches would leave you several boards short over a large deck.

For cladding the same logic applies to the exposure: lapped siding covers less than its width because each course overlaps the one below.