Enter the original diameter and the chamfer size into the calculator to determine the chamfer diameter. This calculator helps in finding the final diameter of a cylinder after a chamfer has been applied to its edge.

Chamfer Diameter Formula

The following formula is used to calculate the chamfer diameter.

CD = D - 2C

Variables:

  • CD is the chamfer diameter (mm)
  • D is the original diameter (mm)
  • C is the chamfer size (mm)

To calculate the chamfer diameter, subtract twice the chamfer size from the original diameter.

What is a Chamfer Diameter?

A chamfer diameter is the final diameter of a cylindrical object after a chamfer has been made to its edge. A chamfer is a beveled edge that connects two surfaces, and in the case of cylindrical objects, it often serves the purpose of easing the assembly of parts or reducing stress concentrations. The chamfer diameter is smaller than the original diameter and is an important measurement in manufacturing and engineering design.

How to Calculate Chamfer Diameter?

The following steps outline how to calculate the Chamfer Diameter.


  1. First, determine the original diameter (D) of the cylindrical object in millimeters.
  2. Next, determine the chamfer size (C) in millimeters.
  3. Next, gather the formula from above = CD = D – 2C.
  4. Finally, calculate the Chamfer Diameter (CD) in millimeters.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

original diameter (D) = 50 mm

chamfer size (C) = 5 mm