Attofarad is 1e-18 farad units.
Attofarads to Decifarads Converter — aF to dF
Convert Attofarad (aF) to Decifarad (dF) using the exact conversion factor (1 attofarad = 1e-17 decifarad). See the formula, worked examples, and conversion table.
Attofarads to Decifarads 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.
Decifarad is 0.1 farad units.
Result = input x 1e-18 / 0.1.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Attofarads to Decifarads
Attofarad and Decifarad 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: Attofarad is 1e-18 farad units, and decifarad is 0.1 farad units.
Formula
decifarads = attofarads × 1e-17
This factor comes from each unit's defined relationship to the category's base unit: 1 attofarad equals 1e-18 base units, and 1 decifarad equals 0.1 base units, so dividing one by the other gives the direct attofarad-to-decifarad factor of 1e-17.
Simple example
1 aF × 1e-17 = 1e-17 dF
1 attofarad = 1e-17 decifarads.
Real-world example
120 aF × 1e-17 = 1.2e-15 dF
120 attofarads = 1.2e-15 decifarads.
Conversion table
| Attofarad (aF) | Decifarad (dF) |
|---|---|
| 1 aF | 1e-17 dF |
| 5 aF | 5e-17 dF |
| 12 aF | 1.2e-16 dF |
| 24 aF | 2.4e-16 dF |
| 120 aF | 1.2e-15 dF |
| 240 aF | 2.4e-15 dF |
Reverse conversion: Decifarad to Attofarad
1e-17 dF × 1e+17 = 1 aF
1e-17 decifarads = 1 attofarad.
attofarads = decifarads × 1e+17
For a page dedicated to this direction, see Decifarad to Attofarad.
Understanding the Attofarad (aF)
Attofarad is 1e-18 farad units.
Understanding the Decifarad (dF)
Decifarad is 0.1 farad units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decifarads are in 1 attofarad?
1 attofarad equals 1e-17 decifarads, using the exact defined conversion factor rather than an estimate.
How do I convert attofarad to decifarad?
Multiply the attofarad value by 1e-17. The converter above does this instantly to whatever precision you set.
How do I convert decifarad back to attofarad?
Use the reverse factor: 1 decifarad equals 1e+17 attofarads. You can also use the swap control in the converter above to flip the direction instantly.
What is a attofarad?
Attofarad (aF) is a unit of electricity.
What is a decifarad?
Decifarad (dF) is a unit of electricity.
Is the attofarad to decifarad conversion exact?
Yes. Both attofarad and decifarad are defined by fixed standards rather than physical artifacts, so the factor of 1e-17 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.