Attoohm is 1e-18 ohm units.
Attoohms to Nanoohms Converter — aOhm to nOhm
Convert Attoohm (aOhm) to Nanoohm (nOhm) using the exact conversion factor (1 attoohm = 1e-9 nanoohm). See the formula, worked examples, and conversion table.
Attoohms to Nanoohms 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.
Nanoohm is 1e-9 ohm units.
Result = input x 1e-18 / 1e-9.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Attoohms to Nanoohms
Attoohm and Nanoohm 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 nanoohm is 1e-9 ohm units.
Formula
nanoohms = attoohms × 1e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 attoohm equals 1e-18 base units, and 1 nanoohm equals 1e-9 base units, so dividing one by the other gives the direct attoohm-to-nanoohm factor of 1e-9.
Simple example
1 aOhm × 1e-9 = 1e-9 nOhm
1 attoohm = 1e-9 nanoohms.
Real-world example
120 aOhm × 1e-9 = 1.2e-7 nOhm
120 attoohms = 1.2e-7 nanoohms.
Conversion table
| Attoohm (aOhm) | Nanoohm (nOhm) |
|---|---|
| 1 aOhm | 1e-9 nOhm |
| 5 aOhm | 5e-9 nOhm |
| 12 aOhm | 1.2e-8 nOhm |
| 24 aOhm | 2.4e-8 nOhm |
| 120 aOhm | 1.2e-7 nOhm |
| 240 aOhm | 2.4e-7 nOhm |
Reverse conversion: Nanoohm to Attoohm
1e-9 nOhm × 1000000000 = 1 aOhm
1e-9 nanoohms = 1 attoohm.
attoohms = nanoohms × 1000000000
For a page dedicated to this direction, see Nanoohm to Attoohm.
Understanding the Attoohm (aOhm)
Attoohm is 1e-18 ohm units.
Understanding the Nanoohm (nOhm)
Nanoohm is 1e-9 ohm units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanoohms are in 1 attoohm?
1 attoohm equals 1e-9 nanoohms, using the exact defined conversion factor rather than an estimate.
How do I convert attoohm to nanoohm?
Multiply the attoohm value by 1e-9. The converter above does this instantly to whatever precision you set.
How do I convert nanoohm back to attoohm?
Use the reverse factor: 1 nanoohm equals 1,000,000,000 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 nanoohm?
Nanoohm (nOhm) is a unit of electricity.
Is the attoohm to nanoohm conversion exact?
Yes. Both attoohm and nanoohm are defined by fixed standards rather than physical artifacts, so the factor of 1e-9 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.