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

Drawer-front width (mm)

Required number input.

Clear opening width (mm)

Required number input.

Find equal side overlay of a centered drawer front from front width and clear opening width. 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]

Overlay per side (mm)

The resulting overlay per side 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.

• Tuer Blatt Ueberfaltung

  Equal side overlay of a centered door leaf over a narrower clear opening, based on measured leaf and opening widths.

• Tuer Luft Spalt

  Equal left and right side clearance of a centered door leaf inside a wider clear opening.

• Drawer Box Dimensions

  Calculate outside drawer-box width, height, and depth from clear cabinet opening and chosen slide, vertical, and back clearances.