This converter changes power levels from dBm (decibel-milliwatts) to dBmV (decibel-millivolts). It helps engineers compare or align measurements between power-based and voltage-based signal levels, especially in RF and cable systems.
Formula
dBmV = dBm + 30 + 20 * log10(√Z0)
Formula Explanation
- dBm represents the power level in milliwatts.
- Z0 is the system impedance (usually 50 or 75 ohms).
- The equation converts the power ratio into its equivalent voltage level in dBmV.
Example
Input: dBm = 0, Z0 = 75 Ω
Result: dBmV ≈ 48.75
Who uses it
Ideal for RF and cable engineers working on signal level matching and power-to-voltage conversions.