Femtosecond is 1e-15 second units.
Femtoseconds to Picoseconds Converter — fs to ps
Convert Femtosecond (fs) to Picosecond (ps) using the exact conversion factor (1 femtosecond = 0.001 picosecond). See the formula, worked examples, and conversion table.
Femtoseconds to Picoseconds 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.
Picosecond is 1e-12 second units.
Result = input x 1e-15 / 1e-12.
Months and years use the average Gregorian year.
Reserved above the conversion cards and below the converter.
About Converting Femtoseconds to Picoseconds
Femtosecond and Picosecond 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: Femtosecond is 1e-15 second units, and picosecond is 1e-12 second units.
Formula
picoseconds = femtoseconds × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 femtosecond equals 1e-15 base units, and 1 picosecond equals 1e-12 base units, so dividing one by the other gives the direct femtosecond-to-picosecond factor of 0.001.
Simple example
1 fs × 0.001 = 0.001 ps
1 femtosecond = 0.001 picoseconds.
Real-world example
24 fs × 0.001 = 0.024 ps
24 femtoseconds = 0.024 picoseconds.
Conversion table
| Femtosecond (fs) | Picosecond (ps) |
|---|---|
| 1 fs | 0.001 ps |
| 7 fs | 0.007 ps |
| 24 fs | 0.024 ps |
| 30 fs | 0.03 ps |
| 100 fs | 0.1 ps |
| 365 fs | 0.365 ps |
Reverse conversion: Picosecond to Femtosecond
0.001 ps × 1000 = 1 fs
0.001 picoseconds = 1 femtosecond.
femtoseconds = picoseconds × 1000
For a page dedicated to this direction, see Picosecond to Femtosecond.
Understanding the Femtosecond (fs)
Femtosecond is 1e-15 second units.
Understanding the Picosecond (ps)
Picosecond is 1e-12 second units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picoseconds are in 1 femtosecond?
1 femtosecond equals 0.001 picoseconds, using the exact defined conversion factor rather than an estimate.
How do I convert femtosecond to picosecond?
Multiply the femtosecond value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert picosecond back to femtosecond?
Use the reverse factor: 1 picosecond equals 1,000 femtoseconds. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtosecond?
Femtosecond (fs) is a unit of time.
What is a picosecond?
Picosecond (ps) is a unit of time.
Is the femtosecond to picosecond conversion exact?
Yes. Both femtosecond and picosecond are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.