Current converter

1 mA = 0.001 A (exact)

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About current conversions

A, mA, µA, nA.

Common current conversions

Current units explained

Unit	System	Definition and notes
Ampere (A)	SI (metric)	Base unitThe SI base unit of electric current, defined using the charge of a single electron.
Milliampere (mA)	SI (metric)	1 mA = 0.001 A (exact)
Microampere (µA)	SI (metric)	1 µA = 0.000001 A (exact)
Nanoampere (nA)	SI (metric)	1 nA = 1 × 10⁻⁹ A (exact)
Kiloampere (kA)	SI (metric)	1 kA = 1,000 A (exact)

Milliamperes to amperes conversion table

milliampere (mA) to ampere (A)
Milliamperes (mA)	Amperes (A)
0.1 mA	0.0001 A
0.5 mA	0.0005 A
1 mA	0.001 A
2 mA	0.002 A
3 mA	0.003 A
4 mA	0.004 A
5 mA	0.005 A
6 mA	0.006 A
7 mA	0.007 A
8 mA	0.008 A
9 mA	0.009 A
10 mA	0.01 A
15 mA	0.015 A
20 mA	0.02 A
25 mA	0.025 A
30 mA	0.03 A
40 mA	0.04 A
50 mA	0.05 A
75 mA	0.075 A
100 mA	0.1 A
250 mA	0.25 A
500 mA	0.5 A
1,000 mA	1 A

Frequently asked questions

Which current units can I convert?

amperes (A), milliamperes (mA), microamperes (µA), nanoamperes (nA), kiloamperes (kA).

How accurate are the results?

Every unit is stored with its exact defining factor (NIST SP 811, NIST Handbook 44 or the BIPM SI Brochure). Calculations use double-precision arithmetic and are rounded only for display, to 5 significant figures by default (trailing zeros dropped, so 1 km shows as 1000 m). You can choose Auto (up to 10 digits), fixed decimals or more significant figures, or switch to scientific or engineering notation.

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