Differential Pair Impedance Calculator


In the world of electronics, precision and accuracy are paramount. Calculating the impedance of a differential pair is crucial for ensuring signal integrity in high-speed circuits. With the right tool at hand, this process becomes efficient and reliable. In this article, we’ll introduce you to a differential pair impedance calculator that simplifies complex calculations effortlessly.

How to Use

Using our calculator is straightforward. Enter the values of the parameters into the designated fields, click the “Calculate” button, and instantly receive the impedance of the differential pair. It’s that simple!


The impedance of a differential pair can be calculated using the following formula:


  • Zdiff​ is the differential impedance.
  • L is the inductance per unit length of the transmission line.
  • C is the capacitance per unit length of the transmission line.

Example Solve

Let’s say we have a differential pair with an inductance per unit length (L) of 0.2 μH/mm and a capacitance per unit length (C) of 0.1 pF/mm. Plugging these values into the formula, we get:

So, the impedance of the given differential pair is 2 ohms.


Q: Can this calculator handle different units for inductance and capacitance?
A: Yes, our calculator supports various units, including henries, microhenries, picofarads, and microfarads.

Q: Is there a limit to the number of decimal places in the input values?
A: Our calculator can handle a high degree of precision, making it suitable for intricate calculations.

Q: Can I use this calculator for differential pairs in different materials?
A: Absolutely! Whether you’re working with FR-4, Rogers, or any other material, our calculator provides accurate results.


In conclusion, our differential pair impedance calculator offers a convenient and efficient solution for engineers and enthusiasts alike. By simplifying complex calculations, it empowers users to optimize the performance of their high-speed circuits effortlessly. Try it out today and experience precision at your fingertips.

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