Attoampere is 1e-18 ampere units.
Attoamperes to Yoctoamperes Converter — aA to yA
Convert Attoampere (aA) to Yoctoampere (yA) using the exact conversion factor (1 attoampere = 1,000,000 yoctoampere). See the formula, worked examples, and conversion table.
Attoamperes to Yoctoamperes converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Yoctoampere is 1e-24 ampere units.
Result = input x 1e-18 / 1e-24.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Attoamperes to Yoctoamperes
Attoampere and Yoctoampere both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Attoampere is 1e-18 ampere units, and yoctoampere is 1e-24 ampere units.
Formula
yoctoamperes = attoamperes × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 attoampere equals 1e-18 base units, and 1 yoctoampere equals 1e-24 base units, so dividing one by the other gives the direct attoampere-to-yoctoampere factor of 1000000.
Simple example
1 aA × 1000000 = 1,000,000 yA
1 attoampere = 1,000,000 yoctoamperes.
Real-world example
120 aA × 1000000 = 120,000,000 yA
120 attoamperes = 120,000,000 yoctoamperes.
Conversion table
| Attoampere (aA) | Yoctoampere (yA) |
|---|---|
| 1 aA | 1,000,000 yA |
| 5 aA | 5,000,000 yA |
| 12 aA | 12,000,000 yA |
| 24 aA | 24,000,000 yA |
| 120 aA | 120,000,000 yA |
| 240 aA | 240,000,000 yA |
Reverse conversion: Yoctoampere to Attoampere
1 yA × 0.000001 = 0.000001 aA
1 yoctoampere = 0.000001 attoamperes.
attoamperes = yoctoamperes × 0.000001
For a page dedicated to this direction, see Yoctoampere to Attoampere.
Understanding the Attoampere (aA)
Attoampere is 1e-18 ampere units.
Understanding the Yoctoampere (yA)
Yoctoampere is 1e-24 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctoamperes are in 1 attoampere?
1 attoampere equals 1,000,000 yoctoamperes, using the exact defined conversion factor rather than an estimate.
How do I convert attoampere to yoctoampere?
Multiply the attoampere value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert yoctoampere back to attoampere?
Use the reverse factor: 1 yoctoampere equals 0.000001 attoamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a attoampere?
Attoampere (aA) is a unit of electricity.
What is a yoctoampere?
Yoctoampere (yA) is a unit of electricity.
Is the attoampere to yoctoampere conversion exact?
Yes. Both attoampere and yoctoampere are defined by fixed standards rather than physical artifacts, so the factor of 1000000 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.