uV to dBuV Calculator

This tool helps convert from uV (microvolt) to dBµV (deciBel microvolt)

arrow dBuV to uV

Note that uV is a positive number that represents the root-mean-square voltage and it cannot be less than zero.

Formula

dBµV = 20*Log10(µV)

Background

The dB scale is a very convenient representation for large numbers and allows for easy multiplication of two linear quantities. uV/m is used by the FCC to specify radiated limits for RF equipment. The first three columns of the following table of Radiated Emissions Limit is from [1].

Use this calculator to convert from uV to dBuV

Freq. (MHz)uV/mdBuV/mDistance (m)
30-88100 403
88-216150 43.53
216-960200 463
Above 960500543

This calculator can be used to convert dBuV/m values to transmit power in dBm

Check out our complete list of RF Calculators