Return Loss ↔ VSWR Converter
Use this tool to convert Return Loss (in dB) to VSWR and vice versa, using standard RF formulas.
Result will appear here
Formula:
VSWR = (1 + 10(-RL/20)) / (1 - 10(-RL/20))
Notes:
- VSWR = 1 → perfect impedance match (no reflections)
- Return Loss > 20 dB → well-matched system
- Return Loss < 10 dB → critical mismatch
- VSWR > 2:1 → risk of power loss or signal reflections
This tool helps with:
Evaluating impedance matching in RF and antenna systems.
Interpreting VSWR values in terms of reflected power (Return Loss).
Verifying cable and antenna performance during RF testing.
Last updated on May 27, 2025 by IBL-Editors Team
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