An Attoampere (aA) equals 1e-18 ampere(s), a scaled unit of electric current used for atto-scale electrical work.
Attoamperes to Amperes
Convert Attoampere (aA) to Ampere (A) instantly with an exact formula, conversion table, and FAQ.
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Convert attoamperes (aA) to amperes (A) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
The ampere (A) is the SI unit of electric current, measuring the rate of flow of electric charge.
A = aA × 1.000000e-18
Results update instantly for Attoamperes to Amperes conversions.
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Formula
A = aA × 1.000000e-18
aA = A × 1.000000e+18
Conversion table
| 1 aA | 1.000000e-18 A |
| 5 aA | 5.000000e-18 A |
| 10 aA | 1.000000e-17 A |
| 20 aA | 2.000000e-17 A |
| 50 aA | 5.000000e-17 A |
| 100 aA | 1.000000e-16 A |
| 500 aA | 5.000000e-16 A |
| 1000 aA | 1.000000e-15 A |
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How the formula works
Both attoampere and ampere measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in attoamperes by 1.000000e-18 to get amperes. To reverse the conversion, multiply a ampere value by 1.000000e+18 to get back to attoamperes.
Frequently asked questions
What is Attoampere (aA)?
An Attoampere (aA) equals 1e-18 ampere(s), a scaled unit of electric current used for atto-scale electrical work.
What is Ampere (A)?
The ampere (A) is the SI unit of electric current, measuring the rate of flow of electric charge.
How do I convert attoamperes to amperes?
Multiply the attoampere value by 1.000000e-18 to get the equivalent in amperes. For example, 5 aA × 1.000000e-18 = 5.000000e-18 A.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e-18 is an exact, non-rounded value.
Can I convert amperes back to attoamperes?
Yes. Divide the ampere value by 1.000000e-18, or multiply it by 1.000000e+18, to get attoamperes.
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About converting attoamperes to amperes
An Attoampere (aA) equals 1e-18 ampere(s), a scaled unit of electric current used for atto-scale electrical work. The ampere (A) is the SI unit of electric current, measuring the rate of flow of electric charge.
Use this calculator to move between attoamperes and amperes accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.