【How-to】Is 1000ma the same as 1a

One milliampere is equal to 1/1,000 of an ampere, which is the electrical current equal to the flow of one coulomb per second. The milliampere is a multiple of the ampere, which is the SI base unit for electric current. … Milliamperes can be abbreviated as mA; for example, 1 milliampere can be written as 1 mA.