Attovolt is 1e-18 volt units.
Attovolts to Femtovolts Converter — aV to fV
Convert Attovolt (aV) to Femtovolt (fV) using the exact conversion factor (1 attovolt = 0.001 femtovolt). See the formula, worked examples, and conversion table.
Attovolts to Femtovolts 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.
Femtovolt is 1e-15 volt units.
Result = input x 1e-18 / 1e-15.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Attovolts to Femtovolts
Attovolt and Femtovolt 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: Attovolt is 1e-18 volt units, and femtovolt is 1e-15 volt units.
Formula
femtovolts = attovolts × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 attovolt equals 1e-18 base units, and 1 femtovolt equals 1e-15 base units, so dividing one by the other gives the direct attovolt-to-femtovolt factor of 0.001.
Simple example
1 aV × 0.001 = 0.001 fV
1 attovolt = 0.001 femtovolts.
Real-world example
120 aV × 0.001 = 0.12 fV
120 attovolts = 0.12 femtovolts.
Conversion table
| Attovolt (aV) | Femtovolt (fV) |
|---|---|
| 1 aV | 0.001 fV |
| 5 aV | 0.005 fV |
| 12 aV | 0.012 fV |
| 24 aV | 0.024 fV |
| 120 aV | 0.12 fV |
| 240 aV | 0.24 fV |
Reverse conversion: Femtovolt to Attovolt
0.001 fV × 1000 = 1 aV
0.001 femtovolts = 1 attovolt.
attovolts = femtovolts × 1000
For a page dedicated to this direction, see Femtovolt to Attovolt.
Understanding the Attovolt (aV)
Attovolt is 1e-18 volt units.
Understanding the Femtovolt (fV)
Femtovolt is 1e-15 volt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtovolts are in 1 attovolt?
1 attovolt equals 0.001 femtovolts, using the exact defined conversion factor rather than an estimate.
How do I convert attovolt to femtovolt?
Multiply the attovolt value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert femtovolt back to attovolt?
Use the reverse factor: 1 femtovolt equals 1,000 attovolts. You can also use the swap control in the converter above to flip the direction instantly.
What is a attovolt?
Attovolt (aV) is a unit of electricity.
What is a femtovolt?
Femtovolt (fV) is a unit of electricity.
Is the attovolt to femtovolt conversion exact?
Yes. Both attovolt and femtovolt 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.