Ampere

The ampere is the measure of electrical current. It is also commonly referred to as an amp. The standard abbreviation for the Ampere is A.

SI multiples

The unit Ampere may be modified by SI standard prefixes.

Many consumer products are rated in milliamps or 1/1000th of an amp, also written as mA, i.e. 20mA.

SI multiples for Amp (A)

Submultiples				Multiples
Value	Symbol	Name		Value	Symbol	Name
10−1 A	dA	deciAmp		101 A	daA	decaAmp
10−2 A	cA	centiAmp		102 A	hA	hectoAmp
10−3 A	mA	milliAmp		103 A	kA	kiloAmp
10−6 A	µA	microAmp		106 A	MA	megaAmp
10−9 A	nA	nanoAmp		109 A	GA	gigaAmp
10−12 A	pA	picoAmp		1012 A	TA	teraAmp
10−15 A	fA	femtoAmp		1015 A	PA	petaAmp
10−18 A	aA	attoAmp		1018 A	EA	exaAmp
10−21 A	zA	zeptoAmp		1021 A	ZA	zettaAmp
10−24 A	yA	yoctoAmp		1024 A	YA	yottaAmp
Common prefixed units are in bold face.

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