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Board Foot Calculator

Calculate lumber board feet from thickness, width, length, quantity, waste allowance, and optional price per board foot.

LUMBER
LOCAL NO DATA SENT
BOARD FOOT CALCULATORTHICKNESS × WIDTH × LENGTH ÷ 12
LUMBERMEASURE ONE BOARD TYPE
Board footage is a volume measure commonly used for hardwood. Enter the dimensions your supplier uses for pricing.
TOTALboard feet including extra allowance
PER BOARD
BASE TOTAL
EXTRA
EST. COST
HOW IT WORKSBOARD FOOT FORMULA
READYEnter lumber dimensions and quantity.

LOCAL TOOL: Lumber measurements stay in your browser. Rough-sawn, surfaced, nominal, and actual dimensions may be priced differently by suppliers, so use the dimensions your lumber yard quotes.

FIELD NOTE / 075

One board foot equals 144 cubic inches of lumber.

When thickness and width are in inches and length is in feet, board feet = thickness × width × length ÷ 12. Multiply by the number of boards, then add any ordering allowance.