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

Chamfer depth (mm)

Required number input.

Angle (°)

Chamfer angle relative to the surface in degrees.

Calculate the resulting chamfer width from chamfer depth and angle in degrees. 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]

Chamfer width (mm)

The resulting chamfer width 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.

• Countersink Depth

  Calculate conical countersink depth between pilot-hole diameter and screw-head diameter from included countersink angle.

• Drawer Box Dimensions

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

• 4-Inch Baluster Spacing

  Count equal-width balusters and calculate equal clear gaps, including both end gaps, so none exceeds a four-inch maximum.