Ham Radio Tools
Free calculators and converters for the ham radio operator.
π‘
Antenna Calculator
Calculate dipole, vertical, and J-pole element lengths for any frequency.
γ°οΈ
Coax Loss Calculator
Feed line loss in dB for different cable types at frequency and length.
π
Wire Gauge Calculator
Find the right AWG wire size for a given current and cable length.
β‘
dBm β Watts Converter
Convert between dBm and watts instantly.
π»
Frequency β Band Converter
Enter any HF frequency and find out which ham band it falls on.
π
SWR Calculator
Calculate standing wave ratio from forward and reflected power.
π
Voltage Drop Calculator
12 V / 13.8 V DC run voltage drop and percent loss by wire gauge and current.
πΊοΈ
Grid Square Distance
Maidenhead locator to locator β distance in miles/km and bearing.
βοΈ
Coax Cut Length
Electrical quarter-wave and half-wave coax lengths by frequency and velocity factor.
π―
Antenna Length Presets
One-click band presets with dipole, vertical, loop, and more formulas.
