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Amps to Milliamperes Converter

Convert amps to milliamperes and back, with other electric current units shown alongside.

What this tool does

Convert amps to milliamperes and back, with other electric current units shown alongside. Type an amount in amperes, choose the units, and the tool converts it to milliamperes. It offers 4 electric current units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Microampere, Milliampere, Ampere, Kiloampere. Starts as Ampere.
  • To: Choose one of the same 4 units as "From". Starts as Milliampere.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from amperes to milliamperes:

  • 1 A = 1,000 mA
  • 5 A = 5,000 mA
  • 10 A = 10,000 mA
  • 50 A = 50,000 mA
  • 100 A = 100,000 mA

Multiply the number of amperes by 1,000 to get milliamperes. Both units are exact definitions, so 1,000 is the exact factor: 1 A = 1,000 mA.

Sources: Ampere: SI Brochure, 9th edition (2019). Milliampere: SI Brochure, 9th edition (2019, updated 2022), Table 7 (SI prefixes).

Limitations

  • Converts the unit of an electric current only. It does not work out current from power, voltage or resistance.

FAQs

Q: How do I convert amps to milliamperes?
A: Multiply the amps by 1000. For example, 2 amps is 2000 milliamperes.
Q: How do I convert milliamperes to amps?
A: Divide the milliamperes by 1000. For example, 500 milliamperes is 0.5 amp.
Q: Can I convert milliamperes to amps here?
A: Yes. Choose milliampere in the From box and ampere in the To box.

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