Attosecond is 1e-18 second units.
Attoseconds to Yoctoseconds Converter — as to ys
Convert Attosecond (as) to Yoctosecond (ys) using the exact conversion factor (1 attosecond = 1,000,000 yoctosecond). See the formula, worked examples, and conversion table.
Attoseconds to Yoctoseconds converter
Converter
Time Converter
Convert SI time, civil time, historical durations, months, and years.
Context values
Some unit families need one extra value for a physically accurate result.
Yoctosecond is 1e-24 second units.
Result = input x 1e-18 / 1e-24.
Months and years use the average Gregorian year.
Reserved above the conversion cards and below the converter.
About Converting Attoseconds to Yoctoseconds
Attosecond and Yoctosecond 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: Attosecond is 1e-18 second units, and yoctosecond is 1e-24 second units.
Formula
yoctoseconds = attoseconds × 1000000
This factor comes from each unit's defined relationship to the category's base unit: 1 attosecond equals 1e-18 base units, and 1 yoctosecond equals 1e-24 base units, so dividing one by the other gives the direct attosecond-to-yoctosecond factor of 1000000.
Simple example
1 as × 1000000 = 1,000,000 ys
1 attosecond = 1,000,000 yoctoseconds.
Real-world example
24 as × 1000000 = 24,000,000 ys
24 attoseconds = 24,000,000 yoctoseconds.
Conversion table
| Attosecond (as) | Yoctosecond (ys) |
|---|---|
| 1 as | 1,000,000 ys |
| 7 as | 7,000,000 ys |
| 24 as | 24,000,000 ys |
| 30 as | 30,000,000 ys |
| 100 as | 100,000,000 ys |
| 365 as | 365,000,000 ys |
Reverse conversion: Yoctosecond to Attosecond
1 ys × 0.000001 = 0.000001 as
1 yoctosecond = 0.000001 attoseconds.
attoseconds = yoctoseconds × 0.000001
For a page dedicated to this direction, see Yoctosecond to Attosecond.
Understanding the Attosecond (as)
Attosecond is 1e-18 second units.
Understanding the Yoctosecond (ys)
Yoctosecond is 1e-24 second units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctoseconds are in 1 attosecond?
1 attosecond equals 1,000,000 yoctoseconds, using the exact defined conversion factor rather than an estimate.
How do I convert attosecond to yoctosecond?
Multiply the attosecond value by 1000000. The converter above does this instantly to whatever precision you set.
How do I convert yoctosecond back to attosecond?
Use the reverse factor: 1 yoctosecond equals 0.000001 attoseconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a attosecond?
Attosecond (as) is a unit of time.
What is a yoctosecond?
Yoctosecond (ys) is a unit of time.
Is the attosecond to yoctosecond conversion exact?
Yes. Both attosecond and yoctosecond are defined by fixed standards rather than physical artifacts, so the factor of 1000000 used above is exact to as many digits as you choose to display.