The ampere, abbreviated as A or amp, is the standard unit for electric current. The amp takes its name from André-Marie Ampère, a French physicist who lived during the 18th and 19th centuries. As a metric unit, the ampere can take prefixes to denote different magnitudes. For example, the metric prefix "milli-" represents 0.001, meaning that it takes 1,000 milliamps to equal one amp. You can use simple multiplication or division to convert amps to milliamps.
Instructions
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Multiply the number of amps by 1,000 to convert to milliamps. For example, if you have 50 amps, multiply 50 by 1,000 to get 50,000 mA.
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Divide the number of amps by 0.001 for another method of converting amps to milliamps. For example, divide 50 amps by 0.001 to get 50,000 mA.
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Verify your conversion with an online amps-to-milliamps converter. Enter the number of amps and click "Convert."