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VSWR Calculator

Please check your entries.
transmission line
Zo: Ω
Real Part of ZL: Ω
Imaginary Part of ZL: Ω
Enter Value



The voltage standing wave ratio (VSWR) calculator determines reflection coefficient (GAMMA), VSWR, and return loss (dB) for a mismatched line. In addition, if GAMMA, VSWR, or dB is known, the calculator can convert between the three. If you only need to convert between GAMMA, VSWR, and dB, you can ignore Zo and ZL.


Enter values for Zo, real part of ZL, and imaginary part of ZL. Press Calculate to see the results.


Pick either GAMMA, VSWR, or dB and enter its value. Press Convert to see the results.

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