Microampere is 0.000001 ampere units.
Microamperes to Femtoamperes Converter — uA to fA
Convert Microampere (uA) to Femtoampere (fA) using the exact conversion factor (1 microampere = 1,000,000,000 femtoampere). See the formula, worked examples, and conversion table.
Microamperes 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-6 / 1e-15.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Microamperes to Femtoamperes
Microampere 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: Microampere is 0.000001 ampere units, and femtoampere is 1e-15 ampere units.
Formula
femtoamperes = microamperes × 1000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 microampere equals 0.000001 base units, and 1 femtoampere equals 1e-15 base units, so dividing one by the other gives the direct microampere-to-femtoampere factor of 1000000000.
Simple example
1 uA × 1000000000 = 1,000,000,000 fA
1 microampere = 1,000,000,000 femtoamperes.
Real-world example
120 uA × 1000000000 = 120,000,000,000 fA
120 microamperes = 120,000,000,000 femtoamperes.
Conversion table
| Microampere (uA) | Femtoampere (fA) |
|---|---|
| 1 uA | 1,000,000,000 fA |
| 5 uA | 5,000,000,000 fA |
| 12 uA | 12,000,000,000 fA |
| 24 uA | 24,000,000,000 fA |
| 120 uA | 120,000,000,000 fA |
| 240 uA | 240,000,000,000 fA |
Reverse conversion: Femtoampere to Microampere
1 fA × 1e-9 = 1e-9 uA
1 femtoampere = 1e-9 microamperes.
microamperes = femtoamperes × 1e-9
For a page dedicated to this direction, see Femtoampere to Microampere.
Understanding the Microampere (uA)
Microampere is 0.000001 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 microampere?
1 microampere equals 1,000,000,000 femtoamperes, using the exact defined conversion factor rather than an estimate.
How do I convert microampere to femtoampere?
Multiply the microampere value by 1000000000. The converter above does this instantly to whatever precision you set.
How do I convert femtoampere back to microampere?
Use the reverse factor: 1 femtoampere equals 1e-9 microamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a microampere?
Microampere (uA) is a unit of electricity.
What is a femtoampere?
Femtoampere (fA) is a unit of electricity.
Is the microampere to femtoampere conversion exact?
Yes. Both microampere and femtoampere are defined by fixed standards rather than physical artifacts, so the factor of 1000000000 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.