Attosiemens is 1e-18 siemens units.
Attosiemens to Gigasiemens Converter — aS to GS
Convert Attosiemens (aS) to Gigasiemens (GS) using the exact conversion factor (1 attosiemens = 1e-27 gigasiemens). See the formula, worked examples, and conversion table.
Attosiemens to Gigasiemens 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.
Gigasiemens is 1000000000 siemens 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 Attosiemens to Gigasiemens
Attosiemens and Gigasiemens 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: Attosiemens is 1e-18 siemens units, and gigasiemens is 1000000000 siemens units.
Formula
gigasiemens = attosiemens × 1e-27
This factor comes from each unit's defined relationship to the category's base unit: 1 attosiemens equals 1e-18 base units, and 1 gigasiemens equals 1000000000 base units, so dividing one by the other gives the direct attosiemens-to-gigasiemens factor of 1e-27.
Simple example
1 aS × 1e-27 = 1e-27 GS
1 attosiemens = 1e-27 gigasiemens.
Real-world example
120 aS × 1e-27 = 1.2e-25 GS
120 attosiemens = 1.2e-25 gigasiemens.
Conversion table
| Attosiemens (aS) | Gigasiemens (GS) |
|---|---|
| 1 aS | 1e-27 GS |
| 5 aS | 5e-27 GS |
| 12 aS | 1.2e-26 GS |
| 24 aS | 2.4e-26 GS |
| 120 aS | 1.2e-25 GS |
| 240 aS | 2.4e-25 GS |
Reverse conversion: Gigasiemens to Attosiemens
1e-27 GS × 1e+27 = 1 aS
1e-27 gigasiemens = 1 attosiemens.
attosiemens = gigasiemens × 1e+27
For a page dedicated to this direction, see Gigasiemens to Attosiemens.
Understanding the Attosiemens (aS)
Attosiemens is 1e-18 siemens units.
Understanding the Gigasiemens (GS)
Gigasiemens is 1000000000 siemens units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gigasiemens are in 1 attosiemens?
1 attosiemens equals 1e-27 gigasiemens, using the exact defined conversion factor rather than an estimate.
How do I convert attosiemens to gigasiemens?
Multiply the attosiemens value by 1e-27. The converter above does this instantly to whatever precision you set.
How do I convert gigasiemens back to attosiemens?
Use the reverse factor: 1 gigasiemens equals 1e+27 attosiemens. You can also use the swap control in the converter above to flip the direction instantly.
What is a attosiemens?
Attosiemens (aS) is a unit of electricity.
What is a gigasiemens?
Gigasiemens (GS) is a unit of electricity.
Is the attosiemens to gigasiemens conversion exact?
Yes. Both attosiemens and gigasiemens are defined by fixed standards rather than physical artifacts, so the factor of 1e-27 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.