Gigasecond is 1000000000 second units.
Gigaseconds to Attoseconds Converter — Gs to as
Convert Gigasecond (Gs) to Attosecond (as) using the exact conversion factor (1 gigasecond = 1e+27 attosecond). See the formula, worked examples, and conversion table.
Gigaseconds to Attoseconds converter
Converter
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Context values
Some unit families need one extra value for a physically accurate result.
Attosecond is 1e-18 second units.
Result = input x 1e+9 / 1e-18.
Months and years use the average Gregorian year.
Reserved above the conversion cards and below the converter.
About Converting Gigaseconds to Attoseconds
Gigasecond and Attosecond are both everyday units of duration, and converting between them is one of the most routine calculations there is — scheduling, project planning, and billing all depend on it. Specifically: Gigasecond is 1000000000 second units, and attosecond is 1e-18 second units.
Formula
attoseconds = gigaseconds × 1e+27
This factor comes from each unit's defined relationship to the category's base unit: 1 gigasecond equals 1000000000 base units, and 1 attosecond equals 1e-18 base units, so dividing one by the other gives the direct gigasecond-to-attosecond factor of 1e+27.
Simple example
1 Gs × 1e+27 = 1e+27 as
1 gigasecond = 1e+27 attoseconds.
Real-world example
24 Gs × 1e+27 = 2.4e+28 as
24 gigaseconds = 2.4e+28 attoseconds.
Conversion table
| Gigasecond (Gs) | Attosecond (as) |
|---|---|
| 1 Gs | 1e+27 as |
| 7 Gs | 7e+27 as |
| 24 Gs | 2.4e+28 as |
| 30 Gs | 3e+28 as |
| 100 Gs | 1e+29 as |
| 365 Gs | 3.65e+29 as |
Reverse conversion: Attosecond to Gigasecond
1e+27 as × 1e-27 = 1 Gs
1e+27 attoseconds = 1 gigaseconds.
gigaseconds = attoseconds × 1e-27
For a page dedicated to this direction, see Attosecond to Gigasecond.
Understanding the Gigasecond (Gs)
Gigasecond is 1000000000 second units.
Understanding the Attosecond (as)
Attosecond is 1e-18 second units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attoseconds are in 1 gigasecond?
1 gigasecond equals 1e+27 attoseconds, using the exact defined conversion factor rather than an estimate.
How do I convert gigasecond to attosecond?
Multiply the gigasecond value by 1e+27. The converter above does this instantly to whatever precision you set.
How do I convert attosecond back to gigasecond?
Use the reverse factor: 1 attosecond equals 1e-27 gigaseconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigasecond?
Gigasecond (Gs) is a unit of time.
What is a attosecond?
Attosecond (as) is a unit of time.
Is the gigasecond to attosecond conversion exact?
Yes. Both gigasecond and attosecond 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.