how many milliamperes equal one ampere?

One ampere is equal to 1000 milliamperes.

Quick Scoop

• 1 milliampere (mA) is one-thousandth of an ampere (A), so 1 mA=0.001 A1\text{ mA}=0.001\text{ A}1 mA=0.001 A.

• Flipping that around, 1 A=1000 mA1\text{ A}=1000\text{ mA}1 A=1000 mA.

So if you see a current of 250 mA, that is 250÷1000=0.25250÷1000=0.25250÷1000=0.25 A, and if you have 2 A, that is 2×1000=20002×1000=20002×1000=2000 mA.

Think of it like money: if 1 ampere were 1 dollar, then 1 milliampere would be one-tenth of a cent, and it would take 1000 milliamperes to make that 1 dollar.

TL;DR: How many milliamperes equal one ampere? Exactly 1000 mA = 1 A.

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