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To convert fs to seconds: multiply by 10⁻¹⁵. To convert fs to picoseconds: divide by 1,000.
1 fs = 10⁻¹⁵ s = 0.001 ps = 1,000 as. Light travels about 0.3 µm in one femtosecond.
For example, 1 Femtosecond (fs) = 1.000000e-9 Microsecond (µs).
| Femtosecond (fs) | Microsecond (µs) |
|---|---|
| 0.1 | 1.000000e-10 |
| 0.5 | 5.000000e-10 |
| 1 | 1.000000e-9 |
| 2 | 2.000000e-9 |
| 5 | 5.000000e-9 |
| 10 | 1.000000e-8 |
| 25 | 2.500000e-8 |
| 50 | 5.000000e-8 |
| 100 | 1.000000e-7 |
| 500 | 5.000000e-7 |
| 1000 | 0.000001 |
The femtosecond is a unit of time equal to 10⁻¹⁵ seconds — one quadrillionth of a second.
1 fs = 10⁻¹⁵ s = 0.001 ps = 1,000 as. Light travels about 0.3 µm in one femtosecond.
To convert fs to seconds: multiply by 10⁻¹⁵. To convert fs to picoseconds: divide by 1,000.
LASIK eye surgery uses femtosecond lasers. Also used in precision micro-machining and optical frequency combs.
A femtosecond is to one second as one second is to about 31.7 million years. The fastest chemical reactions occur on femtosecond timescales.
Confusing femtoseconds with picoseconds. Remember: fs is 1,000× shorter than ps.
Ahmed Zewail's Nobel-winning work proved we can 'photograph' chemical reactions happening in femtoseconds using ultrafast laser pulses.
The microsecond is a unit of time equal to 10⁻⁶ seconds — one millionth of a second.
1 µs = 10⁻⁶ s = 1,000 ns = 0.001 ms. Light travels about 300 m in one microsecond.
To convert µs to seconds: multiply by 10⁻⁶. To convert µs to milliseconds: divide by 1,000.
Audio sampling (CD quality ≈ 22.7 µs per sample), USB data transfer timing, radar echo delays, and strobe flash durations.
A camera flash from a xenon strobe tube lasts about 1,000 µs (1 ms), but specialized flashes can be as short as 0.5 µs.
Writing 'us' instead of 'µs' in formal contexts. Also confusing µs with ms — a factor of 1,000 difference.
Micro = millionth. A microsecond is to a second what a second is to about 11.6 days. Think of sound traveling 0.34 mm.



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