Attofarad is 1e-18 farad units.
Attofarads to Ronnafarads Converter — aF to RF
Convert Attofarad (aF) to Ronnafarad (RF) using the exact conversion factor (1 attofarad = 1e-45 ronnafarad). See the formula, worked examples, and conversion table.
Attofarads to Ronnafarads 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.
Ronnafarad is 1e+27 farad units.
Result = input x 1e-18 / 1e+27.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Attofarads to Ronnafarads
Attofarad and Ronnafarad 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 ronnafarad is 1e+27 farad units.
Formula
ronnafarads = attofarads × 1e-45
This factor comes from each unit's defined relationship to the category's base unit: 1 attofarad equals 1e-18 base units, and 1 ronnafarad equals 1e+27 base units, so dividing one by the other gives the direct attofarad-to-ronnafarad factor of 1e-45.
Simple example
1 aF × 1e-45 = 1e-45 RF
1 attofarad = 1e-45 ronnafarads.
Real-world example
120 aF × 1e-45 = 1.2e-43 RF
120 attofarads = 1.2e-43 ronnafarads.
Conversion table
| Attofarad (aF) | Ronnafarad (RF) |
|---|---|
| 1 aF | 1e-45 RF |
| 5 aF | 5e-45 RF |
| 12 aF | 1.2e-44 RF |
| 24 aF | 2.4e-44 RF |
| 120 aF | 1.2e-43 RF |
| 240 aF | 2.4e-43 RF |
Reverse conversion: Ronnafarad to Attofarad
1e-45 RF × 1e+45 = 1 aF
1e-45 ronnafarads = 1 attofarad.
attofarads = ronnafarads × 1e+45
For a page dedicated to this direction, see Ronnafarad to Attofarad.
Understanding the Attofarad (aF)
Attofarad is 1e-18 farad units.
Understanding the Ronnafarad (RF)
Ronnafarad is 1e+27 farad units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ronnafarads are in 1 attofarad?
1 attofarad equals 1e-45 ronnafarads, using the exact defined conversion factor rather than an estimate.
How do I convert attofarad to ronnafarad?
Multiply the attofarad value by 1e-45. The converter above does this instantly to whatever precision you set.
How do I convert ronnafarad back to attofarad?
Use the reverse factor: 1 ronnafarad equals 1e+45 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 ronnafarad?
Ronnafarad (RF) is a unit of electricity.
Is the attofarad to ronnafarad conversion exact?
Yes. Both attofarad and ronnafarad are defined by fixed standards rather than physical artifacts, so the factor of 1e-45 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.