Enter the dielectric constant into the Velocity Factor Calculator. The calculator will evaluate the Velocity Factor. 

Velocity Factor Formula

The following two example problems outline the steps and information needed to calculate the Velocity Factor.

VF = 1 / SQRT(k)


  • VF is the Velocity Factor ( )
  • k is the dielectric constant 

To calculate the velocity factor, divide 1 by the square root of the dielectric constant.

How to Calculate Velocity Factor?

The following steps outline how to calculate the Velocity Factor.

  1. First, determine the dielectric constant. 
  2. Next, gather the formula from above = VF = 1 / SQRT(k).
  3. Finally, calculate the Velocity Factor.
  4. 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.

dielectric constant = 2.53

VF = 1 / SQRT(k) = ?