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

Countertop Height Millimeters (mm)

Required number input.

Worktop Clearance Millimeters (mm)

Required number input.

Height of the bottom of a wall cabinet above the finished floor from countertop height and desired worktop-to-cabinet clearance. 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]

Cabinet Bottom Millimeters (mm)

The resulting cabinet bottom 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.

• Door Floor Clearance Calculator

  Compute the finished door leaf height from the opening height minus the floor clearance below the leaf.

• Arbeitsplatten Ueberstand

  Countertop front overhang beyond cabinet depth after subtracting an optional rear backsplash or wall allowance.

• Auszugsschienen Laenge

  Longest drawer-slide length that fits a measured cabinet interior depth after reserving a specified rear clearance; choose an available product size no longer than this result.