One millivolt (mV) is equal to 0.001 volts (V). This relationship comes from the metric prefix ‘milli-‘, which means one-thousandth. Thus, when you convert millivolts to volts, you divide the number of millivolts by 1,000.
For example, if you have 5 millivolts and you want to convert it to volts, you would calculate: 5 mV ÷ 1000 = 0.005 V. Understanding this conversion is essential in fields like electronics, where precise voltage levels are important for the operation of devices.