Instant · Precise · Universal
28 units available
6 categories total
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) = 0.000001 Nanosecond (ns).
| Femtosecond (fs) | Nanosecond (ns) |
|---|---|
| 0.1 | 1.000000e-7 |
| 0.5 | 5.000000e-7 |
| 1 | 0.000001 |
| 2 | 0.000002 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 100 | 0.0001 |
| 500 | 0.0005 |
| 1000 | 0.001 |
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 nanosecond is a unit of time equal to 10⁻⁹ seconds — one billionth of a second.
1 ns = 10⁻⁹ s = 1,000 ps = 0.001 µs. Light travels about 30 cm (1 foot) in one nanosecond.
To convert ns to seconds: multiply by 10⁻⁹. To convert ns to microseconds: divide by 1,000.
CPU clock cycles (a 3 GHz processor has ~0.33 ns per cycle), DDR memory timing, Ethernet packet gaps, and GPS signal timing.
Grace Hopper handed out 30 cm wires to explain nanoseconds: 'This is one nanosecond' — the distance light travels in that time.
Confusing nanoseconds with milliseconds — they differ by a factor of 1,000,000. In computing, ns and ms are very different.
Grace Hopper's wire trick: hold a 30 cm ruler — light crosses it in 1 ns. This makes the abstract concept tangible.



© 2026 UntangleTools. All Rights Reserved.