A small shop is preparing a hardwood order from measurements already checked on sample stock. The tally contains three groups with different dimensions, so each remains a separate row. The basis is actual measurements, not a promise about how the yard bills lumber. This example shows the exact imperial formula and rounded display while leaving grade, waste, machining, and suitability outside the calculation.
Enter three measured groups
Select imperial units and actual measurements. Add “walnut sides” at 1 inch thick, 8 inches wide, 8 feet long, quantity 3. Add “maple shelves” at 3/4 inch thick, 12 inches wide, 6 feet long, quantity 4. Add “walnut rails” at 1 inch thick, 3 inches wide, 5 feet long, quantity 6. The labels help reading only. Every thickness and width is an inch value, every length a foot value, and quantities are positive whole pieces.
Calculate each row before aggregation
For a row measured in inches and feet, board feet equal thickness × width × length × quantity ÷ 12, which is equivalent to converting length to inches and dividing cubic inches by 144. Walnut sides give 16 board feet, maple shelves give 18, and walnut rails give 7.5. The total is exactly 41.5 board feet, displayed as 41.500. The equivalent cubic volume is 3.458 cubic feet and approximately 0.097923 cubic metres after display rounding.
Add purchasing judgment explicitly
The 41.5 board feet describe only the listed measured pieces. If the shop wants spare material for defects, matching grain, trimming, or mistakes, it should decide the pieces required and add them as visible rows. Before ordering, ask whether the supplier bills actual, rough, nominal, or another commercial dimension and create a separate billed-basis tally if necessary. Do not use this result as a cut optimizer, structural check, or guarantee of usable yield. The browser does not save the list, so copy it before leaving the page.