In terms of voltage, how many millivolts are in one volt?

One volt is defined as 1,000 millivolts. The term "milli" in the metric system is a prefix that signifies one-thousandth of a unit. Thus, when converting volts to millivolts, you multiply the number of volts by 1,000 to find the equivalent in millivolts. This means that if you have one volt, you can express that voltage in millivolts by recognizing that there are 1,000 of these smaller units in one larger volt. Understanding this conversion is essential in various applications, including in amateur radio, where precise measurements of voltage are often necessary.