Enter the inductance of 2 inductors and the coupling coefficient into the calculator to determine the mutual inductance.

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## Mutual Inductance Formula

The following equation is used to calculate the mutual inductance between 2 inductors.

I = k * Sqrt ( L1 * L2 )

- I is the mutual inductance
- k is the coupling coefficient
- L1 is one inductance
- L2 is another inductance

## Mutual Inductance Definition

A mutual inductance is the total inductance between two coupled inductors.

## Mutual Inductance Example

How to calculate mutual inductance?

**First, determine the coupling coefficient.**Determine the coupling coefficient between the two inductors.

**Next, determine the first inductance.**Calculate the inductance of the first inductor.

**Next, determine the second inductance.**Calculate the inductance of the second inductor.

**Finally, calculate the mutual inductance.**Calculate the mutual inductance using the equation above.

## FAQ

**What is mutual inductance?**

Mutual inductance is an inductance between two inductors that are coupled together.

**What is the coupling coefficient?**

The coupling coefficient is a factor introduced by the materials used in coupling two inductors together. The factor depends on what is used and how.