Technology & Computing
VSWR to Return Loss & Reflection Coefficient Calculator
Convert VSWR to return loss (dB) and the magnitude of the reflection coefficient for an RF impedance match.
Your inputs
Change any value to update the result instantly.
Return loss
13.9794 dB
Reflection coefficient (Γ)
0.2
Power reflected
4%
Power transmitted (matched)
96%
A VSWR of 1:1 is a perfect match (infinite return loss); higher VSWR means more reflected power and potential transmitter stress.
Formula and working
Γ = (VSWR − 1) ÷ (VSWR + 1); Return loss (dB) = −20×log10(Γ)
- 1
Collect the inputs
VSWR (e.g. 1.5:1 → enter 1.5) = 1.5
- 2
Apply the formula
Γ = (VSWR − 1) ÷ (VSWR + 1); Return loss (dB) = −20×log10(Γ)
- 3
Result
Return loss = 13.9794 dB
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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