Dipole Antenna Length Calculator Dipole Antenna Length Calculator Calculate the total length of a half-wave dipole antenna using the rule-of-thumb: \[ L_{\text{ft}} = \frac{468}{f \,(\text{MHz})} \] and convert to meters. * Enter the operating frequency in MHz.Step 1: Enter Frequency Frequency, \( f \) (MHz): Example: 14.0 MHz Calculate Dipole Length Dipole Antenna Length Recalculate Share: