Attoohm is 1e-18 ohm units.
Attoohms to Rontoohms Converter — aOhm to rOhm
Convert Attoohm (aOhm) to Rontoohm (rOhm) using the exact conversion factor (1 attoohm = 1,000,000,000 rontoohm). See the formula, worked examples, and conversion table.
Attoohms to Rontoohms 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.
Rontoohm is 1e-27 ohm 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 Attoohms to Rontoohms
Attoohm and Rontoohm 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: Attoohm is 1e-18 ohm units, and rontoohm is 1e-27 ohm units.
Formula
rontoohms = attoohms × 1000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 attoohm equals 1e-18 base units, and 1 rontoohm equals 1e-27 base units, so dividing one by the other gives the direct attoohm-to-rontoohm factor of 1000000000.
Simple example
1 aOhm × 1000000000 = 1,000,000,000 rOhm
1 attoohm = 1,000,000,000 rontoohms.
Real-world example
120 aOhm × 1000000000 = 120,000,000,000 rOhm
120 attoohms = 120,000,000,000 rontoohms.
Conversion table
| Attoohm (aOhm) | Rontoohm (rOhm) |
|---|---|
| 1 aOhm | 1,000,000,000 rOhm |
| 5 aOhm | 5,000,000,000 rOhm |
| 12 aOhm | 12,000,000,000 rOhm |
| 24 aOhm | 24,000,000,000 rOhm |
| 120 aOhm | 120,000,000,000 rOhm |
| 240 aOhm | 240,000,000,000 rOhm |
Reverse conversion: Rontoohm to Attoohm
1 rOhm × 1e-9 = 1e-9 aOhm
1 rontoohm = 1e-9 attoohms.
attoohms = rontoohms × 1e-9
For a page dedicated to this direction, see Rontoohm to Attoohm.
Understanding the Attoohm (aOhm)
Attoohm is 1e-18 ohm units.
Understanding the Rontoohm (rOhm)
Rontoohm is 1e-27 ohm units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many rontoohms are in 1 attoohm?
1 attoohm equals 1,000,000,000 rontoohms, using the exact defined conversion factor rather than an estimate.
How do I convert attoohm to rontoohm?
Multiply the attoohm value by 1000000000. The converter above does this instantly to whatever precision you set.
How do I convert rontoohm back to attoohm?
Use the reverse factor: 1 rontoohm equals 1e-9 attoohms. You can also use the swap control in the converter above to flip the direction instantly.
What is a attoohm?
Attoohm (aOhm) is a unit of electricity.
What is a rontoohm?
Rontoohm (rOhm) is a unit of electricity.
Is the attoohm to rontoohm conversion exact?
Yes. Both attoohm and rontoohm are defined by fixed standards rather than physical artifacts, so the factor of 1000000000 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.