Use this workshop calculation to turn measured dimensions and the selected construction convention into a cut, spacing, fit, or material-planning value.

Stock length (mm)

Required number input.

Piece lengths (mm)

Required list input.

Pack cut pieces into the fewest stock bars using greedy first-fit-decreasing and report total waste. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Bars used

The resulting bars used returned as an integer.

Total waste (mm)

The resulting total waste returned as a number.

• Nominal dimensions, kerf, moisture movement, hardware clearances, wall squareness, and manufacturer instructions can change the required shop dimension. Measure the actual assembly and test critical joints on scrap before cutting finished material.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Complement the calculated dimension with a physical story stick, dry fit, or full-size layout. Follow the hardware, coating, adhesive, or machine manufacturer's limits where they differ from a rule of thumb.

• Crown Molding Length

  Total measured crown-molding runs and add a project-specific cut-and-waste allowance.

• Inlay Strip Width

  Set inlay-strip cut width from a measured groove width after subtracting a chosen total fit clearance.

• Plattenzuschnitt Verschnitt

  Sheet-cutting waste percentage from used blank area and total stock-sheet area; excludes kerf unless supplied in used area.