# Phase Angle Calculator

Calculate the phase angle of a coil with the Phase Angle Calculator, and learn how with the integrated live example

The Phase Angle Calculator will calculate the phase angle of a coil using the inductive reactance **and/or** the capacitive reactance, and the resistance of the wire.

The phase angle represents the amount by which the voltage is either leading or lagging the current.

The formula to calculate the phase angle is:

Or

Where*θ* = Phase angle in degrees*X _{L}* = Inductive reactance in ohms

*X*= Capacitive reactance in ohms

_{C}*R*= Resistance in ohms

The voltage is * leading* the current when the resulting number is

*, and the voltage is*

**positive***the current when the resulting number is*

**lagging***.*

**negative****Example 1:** Find the phase angle when the inductive reactance is 3200 ohms, the capacitive reactance is 6.3 ohms, and the resistance is 2 ohms

The voltage is * leading* the current.

**Example 2:** Find the phase angle when the inductive reactance is 400 ohms, the capacitive reactance is 6000 ohms, and the resistance is 9 ohms

The voltage is * lagging* the current.

### Using the Phase Angle Calculator

**Inductive reactance:** Enter the inductive reactance

**Capacitive reactance:** Enter the capacitive reactance

**Resistance:** Enter the resistance

**How To Calculate Phase Angle:** This feature displays a live example of how to calculate phase angle using the figures that you enter

The result is calculated and updated automatically as you enter different numbers or change between the input fields. If the calculated result hasn’t updated after you’ve finished entering your values, click or tap on the result.

*Reference: ARRL – The Radio Amateur’s Handbook*