Picoampere is 1e-12 ampere units.
Picoamperes to Ronnaamperes Converter — pA to RA
Convert Picoampere (pA) to Ronnaampere (RA) using the exact conversion factor (1 picoampere = 1e-39 ronnaampere). See the formula, worked examples, and conversion table.
Picoamperes to Ronnaamperes 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.
Ronnaampere is 1e+27 ampere units.
Result = input x 1e-12 / 1e+27.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Picoamperes to Ronnaamperes
Picoampere and Ronnaampere 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: Picoampere is 1e-12 ampere units, and ronnaampere is 1e+27 ampere units.
Formula
ronnaamperes = picoamperes × 1e-39
This factor comes from each unit's defined relationship to the category's base unit: 1 picoampere equals 1e-12 base units, and 1 ronnaampere equals 1e+27 base units, so dividing one by the other gives the direct picoampere-to-ronnaampere factor of 1e-39.
Simple example
1 pA × 1e-39 = 1e-39 RA
1 picoampere = 1e-39 ronnaamperes.
Real-world example
120 pA × 1e-39 = 1.2e-37 RA
120 picoamperes = 1.2e-37 ronnaamperes.
Conversion table
| Picoampere (pA) | Ronnaampere (RA) |
|---|---|
| 1 pA | 1e-39 RA |
| 5 pA | 5e-39 RA |
| 12 pA | 1.2e-38 RA |
| 24 pA | 2.4e-38 RA |
| 120 pA | 1.2e-37 RA |
| 240 pA | 2.4e-37 RA |
Reverse conversion: Ronnaampere to Picoampere
1e-39 RA × 1e+39 = 1 pA
1e-39 ronnaamperes = 1 picoampere.
picoamperes = ronnaamperes × 1e+39
For a page dedicated to this direction, see Ronnaampere to Picoampere.
Understanding the Picoampere (pA)
Picoampere is 1e-12 ampere units.
Understanding the Ronnaampere (RA)
Ronnaampere is 1e+27 ampere units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ronnaamperes are in 1 picoampere?
1 picoampere equals 1e-39 ronnaamperes, using the exact defined conversion factor rather than an estimate.
How do I convert picoampere to ronnaampere?
Multiply the picoampere value by 1e-39. The converter above does this instantly to whatever precision you set.
How do I convert ronnaampere back to picoampere?
Use the reverse factor: 1 ronnaampere equals 1e+39 picoamperes. You can also use the swap control in the converter above to flip the direction instantly.
What is a picoampere?
Picoampere (pA) is a unit of electricity.
What is a ronnaampere?
Ronnaampere (RA) is a unit of electricity.
Is the picoampere to ronnaampere conversion exact?
Yes. Both picoampere and ronnaampere are defined by fixed standards rather than physical artifacts, so the factor of 1e-39 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.