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dBm Converter

dBm Power Converter

Convert between dBm, watts, volts and more

Input Value

Options

About dBm:

dBm is a power measurement relative to 1 milliwatt (0 dBm = 1 mW). It's commonly used in RF and microwave engineering.

Learn more about dBm

Conversion Results

0 dBm
Unit Value
dBm 0.00 dBm
Watts (W) 1.00 mW
Milliwatts (mW) 1.00 mW
Microwatts (µW) 1,000.00 µW
Volts (V) 0.22 V

Reference Power

1.00 mW

Impedance Used

50 Ω

Voltage (RMS)

0.22 V

Current (RMS)

4.47 mA

Power Level Typical Application
+30 dBm RF transmitters
+20 dBm Wi-Fi routers
0 dBm Reference level
-30 dBm Received signal
-60 dBm Minimum for communication



A dBm converter is a tool that helps convert power levels between decibel-milliwatts (dBm) and milliwatts (mW), watts (W), or other logarithmic power units. dBm is a logarithmic unit used to express absolute power in radio frequency (RF), telecommunications, and electronics. 

Key Features of a dBm Converter 

  Converts dBm to mW and vice versa using the formula: 

  • mW = 10^(dBm/10) 
  • dBm = 10 × log₁₀(mW) 

  Supports conversions to watts (W), dBW (decibel-watts), and voltage (V) in specific impedances. 

  Useful for RF engineering, Wi-Fi signal analysis, fiber optics, and audio systems. 

Example Conversions 

  • 0 dBm = 1 mW (reference level) 
  • 10 dBm = 10 mW 
  • -30 dBm = 0.001 mW (1 μW) 

Why Use a dBm Converter? 


Simplifies power level calculations in wireless networks, amplifiers, and signal testing. 

Helps interpret signal strength (e.g., Wi-Fi routers, cellular networks). 

Ensures accurate measurements in dBm, mW, or watts without manual calculations. 

Whether you're an engineer, technician, or hobbyist, a dBm converter provides quick and precise power unit conversions for better signal analysis.