Phase shift is the lateral difference between two or more wave forms along a common axis.

We use the phase shift formula to determine the relationship between two wave forms and their resulting phase angle.

**Formula to calculate phase shift.**

**Example:**

Calculate the phase shift of a wave if the time difference between it and another wave is 0.1 seconds and its period is 0.001 seconds.

Therefore, the phase shift of the wave is 3.6 degrees.