Femtoampere is 1e-15 ampere units.
Femtoamperes to Picoamperes Converter — fA to pA
Convert Femtoampere (fA) to Picoampere (pA) using the exact conversion factor (1 femtoampere = 0.001 picoampere). See the formula, worked examples, and conversion table.
Femtoamperes to Picoamperes 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.
Picoampere is 1e-12 ampere units.
Result = input x 1e-15 / 1e-12.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Femtoamperes to Picoamperes
Femtoampere and Picoampere 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: Femtoampere is 1e-15 ampere units, and picoampere is 1e-12 ampere units.
Formula
picoamperes = femtoamperes × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 femtoampere equals 1e-15 base units, and 1 picoampere equals 1e-12 base units, so dividing one by the other gives the direct femtoampere-to-picoampere factor of 0.001.
Simple example
1 fA × 0.001 = 0.001 pA
1 femtoampere = 0.001 picoamperes.
Real-world example
120 fA × 0.001 = 0.12 pA
120 femtoamperes = 0.12 picoamperes.
Conversion table
| Femtoampere (fA) | Picoampere (pA) |
|---|---|
| 1 fA | 0.001 pA |
| 5 fA | 0.005 pA |
| 12 fA | 0.012 pA |
| 24 fA | 0.024 pA |
| 120 fA | 0.12 pA |
| 240 fA | 0.24 pA |
Reverse conversion: Picoampere to Femtoampere
0.001 pA × 1000 = 1 fA
0.001 picoamperes = 1 femtoampere.
femtoamperes = picoamperes × 1000
For a page dedicated to this direction, see Picoampere to Femtoampere.
Understanding the Femtoampere (fA)
Femtoampere is 1e-15 ampere units.
Understanding the Picoampere (pA)
Picoampere is 1e-12 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picoamperes are in 1 femtoampere?
1 femtoampere equals 0.001 picoamperes, using the exact defined conversion factor rather than an estimate.
How do I convert femtoampere to picoampere?
Multiply the femtoampere value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert picoampere back to femtoampere?
Use the reverse factor: 1 picoampere equals 1,000 femtoamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtoampere?
Femtoampere (fA) is a unit of electricity.
What is a picoampere?
Picoampere (pA) is a unit of electricity.
Is the femtoampere to picoampere conversion exact?
Yes. Both femtoampere and picoampere are defined by fixed standards rather than physical artifacts, so the factor of 0.001 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.