Ham Radio — License Study

Calculate standard or Farnsworth Morse timing, including every gap. Time actual text and repeated copies, choose the final gap, and export a complete report.

Convert frequency to wavelength in meters and feet. Essential ham radio tool for planning, budgeting, and project optimization.

Calculate voltage, current, power, and impedance relationships. Free online ham radio calculator with instant, accurate results.

Convert between watts, milliwatts, dBm, and dBW. Essential ham radio tool for planning, budgeting, and project optimization.

Convert RF power between watts, dBm, and dBW. Calculate power density and link budget components for ham radio and wireless.

Calculate DC current draw from RF output power and supply voltage. Free online ham radio calculator with instant, accurate results.

Calculate standing wave ratio from forward and reflected power. Free online ham radio calculator with instant, accurate results.

Estimate coax cable attenuation at frequency and length. Free online ham radio calculator with instant, accurate results.

Calculate coaxial cable RF signal loss in dB from cable type, run length, and frequency. Estimate transmit power delivered to your antenna.

Calculate reflection coefficient and L-network Q for impedance matching. Free online ham radio calculator with instant, accurate results.

Calculate dipole and quarter-wave vertical antenna lengths from frequency. Free online ham radio calculator with instant, accurate results.

Calculate half-wave dipole and quarter-wave vertical antenna element length from frequency. Includes velocity factor correction for wire type.

Convert antenna gain between dBi and dBd and estimate beamwidth. Free online ham radio calculator with instant, accurate results.