A half-wave dipole antenna is comprised of two quarter-wavelength conductors placed end to end [1].

Use this calculator to determine the length of a half wave dipole from the frequency. Enter either the wavelength and the tool will compute the antenna length (L).

## Example Calculation

At a wavelength of 10 meters, the frequency of operation is 30 MHz. The dipole length (**L**) is **15.61 feet** or **4.76 meters**.

**Formula**

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

**L = 468 / f **

where f is the frequency in MHz.

f is calculated from the wavelength.

The length of each arm of the dipole

**l = L/2**

References

[1] Dipole Antenna on Wikipedia