# ››Convert milliampere to ampere

 milliamps amps

How many milliamps in 1 amps? The answer is 1000.
We assume you are converting between milliampere and ampere.
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milliamps or amps
The SI base unit for electric current is the ampere.
1 ampere is equal to 1000 milliamps, or 1 amps.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between milliamperes and amperes.
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# ››Definition: Milliampere

The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.

So 1 milliampere = 10-3 ampere.

# ››Definition: Amp

In physics, the ampere (symbol: A, often informally abbreviated to amp) is the SI base unit used to measure electrical currents. The present definition, adopted by the 9th CGPM in 1948 is: "one ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in vacuum, would produce between these conductors a force equal to 2 × 10-7 newton per metre of length".

# ››Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!