Enter the total inductance (H) and the total distance (m) into the Calculator. The calculator will evaluate the Cable Inductance Per Meter. 

Cable Inductance Per Meter Formula

IPM = L / D


  • IPM is the Cable Inductance Per Meter (H/m)
  • L is the total inductance (H)
  • D is the total distance (m)

To calculate Cable Inductance Per Meter, divide the total inductance by the distance or length in meters.

How to Calculate Cable Inductance Per Meter?

The following steps outline how to calculate the Cable Inductance Per Meter.

  1. First, determine the total inductance (H). 
  2. Next, determine the total distance (m). 
  3. Next, gather the formula from above = IPM = L / D.
  4. Finally, calculate the Cable Inductance Per Meter.
  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.

total inductance (H) = 43

total distance (m) = 90

Frequently Asked Questions

What is inductance and how does it affect cable performance?

Inductance is a property of an electrical conductor which opposes a change in current. It affects cable performance by potentially causing signal degradation, especially at higher frequencies. Managing inductance is crucial in high-speed data and communication cables to ensure signal integrity.

Why is it important to calculate cable inductance per meter?

Calculating cable inductance per meter helps in designing electrical and communication systems by ensuring that cables meet the necessary specifications for signal integrity and power transmission efficiency. It allows engineers to select or design cables that are optimized for their application.

Can the formula for cable inductance per meter be used for any type of cable?

While the formula IPM = L / D is a general approach, the specific inductance characteristics can vary significantly between different types of cables, such as coaxial cables, twisted pairs, or power cables. It’s important to consider the cable’s construction and material properties for accurate calculations.

How can I reduce the inductance in a cable?

Reducing the inductance in a cable can be achieved by using twisted pair designs, which cancel out some of the magnetic fields generated by the current, or by using cables with shorter lengths. Additionally, selecting materials with lower permeability for the conductor or the insulation can also help reduce inductance.