Quectoampere is 1e-30 ampere units.
Quectoamperes to Femtoamperes Converter — qA to fA
Convert Quectoampere (qA) to Femtoampere (fA) using the exact conversion factor (1 quectoampere = 1e-15 femtoampere). See the formula, worked examples, and conversion table.
Quectoamperes to Femtoamperes 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.
Femtoampere is 1e-15 ampere units.
Result = input x 1e-30 / 1e-15.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Quectoamperes to Femtoamperes
Quectoampere and Femtoampere 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: Quectoampere is 1e-30 ampere units, and femtoampere is 1e-15 ampere units.
Formula
femtoamperes = quectoamperes × 1e-15
This factor comes from each unit's defined relationship to the category's base unit: 1 quectoampere equals 1e-30 base units, and 1 femtoampere equals 1e-15 base units, so dividing one by the other gives the direct quectoampere-to-femtoampere factor of 1e-15.
Simple example
1 qA × 1e-15 = 1e-15 fA
1 quectoampere = 1e-15 femtoamperes.
Real-world example
120 qA × 1e-15 = 1.2e-13 fA
120 quectoamperes = 1.2e-13 femtoamperes.
Conversion table
| Quectoampere (qA) | Femtoampere (fA) |
|---|---|
| 1 qA | 1e-15 fA |
| 5 qA | 5e-15 fA |
| 12 qA | 1.2e-14 fA |
| 24 qA | 2.4e-14 fA |
| 120 qA | 1.2e-13 fA |
| 240 qA | 2.4e-13 fA |
Reverse conversion: Femtoampere to Quectoampere
1e-15 fA × 1e+15 = 1 qA
1e-15 femtoamperes = 1 quectoampere.
quectoamperes = femtoamperes × 1e+15
For a page dedicated to this direction, see Femtoampere to Quectoampere.
Understanding the Quectoampere (qA)
Quectoampere is 1e-30 ampere units.
Understanding the Femtoampere (fA)
Femtoampere is 1e-15 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtoamperes are in 1 quectoampere?
1 quectoampere equals 1e-15 femtoamperes, using the exact defined conversion factor rather than an estimate.
How do I convert quectoampere to femtoampere?
Multiply the quectoampere value by 1e-15. The converter above does this instantly to whatever precision you set.
How do I convert femtoampere back to quectoampere?
Use the reverse factor: 1 femtoampere equals 1e+15 quectoamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a quectoampere?
Quectoampere (qA) is a unit of electricity.
What is a femtoampere?
Femtoampere (fA) is a unit of electricity.
Is the quectoampere to femtoampere conversion exact?
Yes. Both quectoampere and femtoampere are defined by fixed standards rather than physical artifacts, so the factor of 1e-15 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.