Ronnaohm is 1e+27 ohm units.
Ronnaohms to Attoohms Converter — ROhm to aOhm
Convert Ronnaohm (ROhm) to Attoohm (aOhm) using the exact conversion factor (1 ronnaohm = 1e+45 attoohm). See the formula, worked examples, and conversion table.
Ronnaohms to Attoohms 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.
Attoohm is 1e-18 ohm units.
Result = input x 1e+27 / 1e-18.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Ronnaohms to Attoohms
Ronnaohm and Attoohm 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: Ronnaohm is 1e+27 ohm units, and attoohm is 1e-18 ohm units.
Formula
attoohms = ronnaohms × 1e+45
This factor comes from each unit's defined relationship to the category's base unit: 1 ronnaohm equals 1e+27 base units, and 1 attoohm equals 1e-18 base units, so dividing one by the other gives the direct ronnaohm-to-attoohm factor of 1e+45.
Simple example
1 ROhm × 1e+45 = 1e+45 aOhm
1 ronnaohm = 1e+45 attoohms.
Real-world example
120 ROhm × 1e+45 = 1.2e+47 aOhm
120 ronnaohms = 1.2e+47 attoohms.
Conversion table
| Ronnaohm (ROhm) | Attoohm (aOhm) |
|---|---|
| 1 ROhm | 1e+45 aOhm |
| 5 ROhm | 5e+45 aOhm |
| 12 ROhm | 1.2e+46 aOhm |
| 24 ROhm | 2.4e+46 aOhm |
| 120 ROhm | 1.2e+47 aOhm |
| 240 ROhm | 2.4e+47 aOhm |
Reverse conversion: Attoohm to Ronnaohm
1e+45 aOhm × 1e-45 = 1 ROhm
1e+45 attoohms = 1 ronnaohm.
ronnaohms = attoohms × 1e-45
For a page dedicated to this direction, see Attoohm to Ronnaohm.
Understanding the Ronnaohm (ROhm)
Ronnaohm is 1e+27 ohm units.
Understanding the Attoohm (aOhm)
Attoohm is 1e-18 ohm units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attoohms are in 1 ronnaohm?
1 ronnaohm equals 1e+45 attoohms, using the exact defined conversion factor rather than an estimate.
How do I convert ronnaohm to attoohm?
Multiply the ronnaohm value by 1e+45. The converter above does this instantly to whatever precision you set.
How do I convert attoohm back to ronnaohm?
Use the reverse factor: 1 attoohm equals 1e-45 ronnaohms. You can also use the swap control in the converter above to flip the direction instantly.
What is a ronnaohm?
Ronnaohm (ROhm) is a unit of electricity.
What is a attoohm?
Attoohm (aOhm) is a unit of electricity.
Is the ronnaohm to attoohm conversion exact?
Yes. Both ronnaohm and attoohm 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.