The volt, abbreviated V, is the unit of electric potential. The volt gets its name from Italian scientist Count Alessandro Volta, who lived during the 18th and 19th centuries and invented the first battery. Each volt equals a potential of one joule per coulomb of charge. Millivolts, abbreviated mV, are a smaller unit of electric potential. The metric prefix "milli-" equals 0.001, which means that it takes 1,000 mV to equal 1 V.
Instructions
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Multiply the number of volts by 1,000 to convert to millivolts. For example, if you have 3 V, multiply 3 by 1,000 to get 3,000 mV.
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Divide the number of volts by 0.001 to check your conversion to millivolts. For this example, divide 3 by 0.001 to get 3,000 mV.
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Confirm your conversion with an online volts-to-millivolts converter (see Resources). Enter the number of volts, and click "Convert!"