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