To convert seconds to femtoseconds, multiply the value by 1,000,000,000,000,000. To go the other way, multiply femtoseconds by 1 × 10⁻¹⁵ to get seconds.
| Seconds (s) | Femtoseconds (fs) |
|---|---|
| 1 s | 1,000,000,000,000,000 fs |
| 2 s | 2 × 10¹⁵ fs |
| 3 s | 3 × 10¹⁵ fs |
| 4 s | 4 × 10¹⁵ fs |
| 5 s | 5 × 10¹⁵ fs |
| 6 s | 6 × 10¹⁵ fs |
| 7 s | 7 × 10¹⁵ fs |
| 8 s | 8 × 10¹⁵ fs |
| 9 s | 9 × 10¹⁵ fs |
| 10 s | 1 × 10¹⁶ fs |
| 12 s | 1.2 × 10¹⁶ fs |
| 14 s | 1.4 × 10¹⁶ fs |
| 15 s | 1.5 × 10¹⁶ fs |
| 20 s | 2 × 10¹⁶ fs |
| 21 s | 2.1 × 10¹⁶ fs |
| 24 s | 2.4 × 10¹⁶ fs |
| 25 s | 2.5 × 10¹⁶ fs |
| 30 s | 3 × 10¹⁶ fs |
| 40 s | 4 × 10¹⁶ fs |
| 50 s | 5 × 10¹⁶ fs |
| 60 s | 6 × 10¹⁶ fs |
| 75 s | 7.5 × 10¹⁶ fs |
| 80 s | 8 × 10¹⁶ fs |
| 100 s | 1 × 10¹⁷ fs |
| 200 s | 2 × 10¹⁷ fs |
| 250 s | 2.5 × 10¹⁷ fs |
| 300 s | 3 × 10¹⁷ fs |
| 400 s | 4 × 10¹⁷ fs |
| 500 s | 5 × 10¹⁷ fs |
| 750 s | 7.5 × 10¹⁷ fs |
| 1,000 s | 1 × 10¹⁸ fs |
250 s × 1,000,000,000,000,000 = 2.5 × 10¹⁷ fs
Try this example →Second (s). The second is the SI base unit of time, defined by the caesium-133 atom.
Femtosecond (fs). A femtosecond is 10⁻¹⁵ of a second, the scale of laser pulses and chemical reactions.
There are 1,000,000,000,000,000 femtoseconds in one second.
Multiply the number of seconds by 1,000,000,000,000,000. For example, 10 seconds equal 1 × 10¹⁶ femtoseconds.
One femtosecond equals 1 × 10⁻¹⁵ seconds.
1.2 × 10¹⁶ femtoseconds. Other common values: 5 seconds = 5 × 10¹⁵ femtoseconds and 100 seconds = 1 × 10¹⁷ femtoseconds.