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

Edge distance (mm)

Distance from the door edge to the cup center in millimeters.

Compute the minimum door stile width for a 110 degree overlay hinge cup from the cup edge distance. 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]

Cup diameter (mm)

Hinge cup diameter in millimeters.

Minimum stile width (mm)

Minimum stile width in millimeters, the cup diameter plus twice the edge distance.

• 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.

• 155 Degree Hinge Cup Pattern

  Compute the minimum stile width for a 35 mm hinge cup opened to 155 degrees.

• Rafix Drilling Pattern

  Look up the Rafix cam diameter, drilling depth, and edge distance for a given connector system.

• Hinge Overlay Type Lookup

  Look up the typical door overlay in millimeters for a hinge mounting type.