A half-wave dipole antenna is comprised of two quarter-wavelength conductors placed end to end.

Use this calculator to determine the length of a half wave dipole from the frequency.

Enter the frequency and the tool will compute the antenna length (L).

## Example Calculation

For an operating frequency of 2450 MHz, The dipole length (**L**) is **2.29 inches** or **5.82 centimeters**.

**Formula**

The total length (L) of the dipole antenna in feet is calculated as:

**L = 468 / f **

where f is the frequency in MHz.

The length of each arm of the dipole

**l = L/2**