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

Center Millimeters (mm)

Required number input.

Hole Spacing Millimeters (mm)

Required number input.

Two cabinet-handle bore center positions about a marked centerline for standard 128 mm or 192 mm center spacing. 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]

Left Center Millimeters (mm)

The resulting left center millimeters returned as a number.

Right Center Millimeters (mm)

The resulting right center millimeters 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.

• Dovetail Spacing

  Lay out equal dovetail tails between two end pins and equal interior pins; report tail width and center pitch.

• Dowel Spacing

  Calculate equal center-to-center spacing for dowels whose outermost center positions span a measured length.

• Duebelabstand 32mm System

  Center position of a selected hole on a 32 mm cabinet-system row from its first center and zero-based hole index.