Calculators › Transmission Lines
Two-Wire Line Calculator
Compute characteristic impedance, capacitance, inductance per metre, wavelength and λ/4 length for parallel two-wire balanced transmission lines — twin-lead, open-wire feeders and twisted pair. Uses the exact acosh formula.
Parameters
Wire Diameter 2r
mm
Centre spacing D
mm
Permittivity εr
—
Frequency
⚠ D must be > wire diameter.
Presets
Impedance & Line Params
Click Calculate
Wavelength & Velocity
Click Calculate