VSWR & return loss
Convert standing-wave ratio into reflected power and mismatch loss.
Return loss--
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VSWR, Return Loss and Reflected Power Calculator
Convert VSWR into return loss, reflected-power percentage and mismatch loss.
About this calculator
How to use it
Enter a measured VSWR to see the equivalent return loss and estimated proportion of power reflected by the load.
Understanding the result
VSWR alone does not identify the cause of a mismatch. Inspect the antenna, feedline and connectors with suitable test equipment.
More ham radio calculators
Use this calculator as a practical starting point. Check critical radio, electrical and installation work with suitable test equipment and current licence requirements.