dBm ↔ Voltage Converter
Convert RF power and voltage quantities in real time using a selectable load impedance.
| dBm | dBW | W | mW | VRMS | Vpeak | Vpp | dBV | dBµV |
|---|---|---|---|---|---|---|---|---|
Enter a value in any field.
Voltage values are RMS unless otherwise specified. Vpeak and Vpp assume a sinusoidal signal. In Fixed mode, precision indicates decimal places.
How the converter works
The converter relates RF power and voltage using the selected resistive load impedance. Enter a value in any field and all other quantities are updated immediately.
P = VRMS2 / R
VRMS = √(P × R)
dBm = 10 log10(P / 1 mW)
dBW = dBm − 30
dBµV = dBV + 120
Display formats
Electronics mode uses standard SI prefixes such as p, n, µ, m, k, M and G. Scientific, significant-digit and fixed-point representations are also available.
Typical applications
This tool is useful for RF and microwave measurements, SDR development, oscilloscopes, spectrum analyzers, signal generators, audio systems and laboratory instrumentation.
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