Convert Seconds to Microseconds
Convert Seconds (s) to Microseconds (µs) instantly and accurately.
Conversion Formula
µs = s × 1000000
About Seconds
The second (s) is the SI base unit of time, defined since 1967 as exactly 9,192,631,770 periods of the caesium-133 ground-state hyperfine transition at 0 K. Caesium fountain clocks realise this to ~10⁻¹⁶ (1 s lost per ~300 million years); optical lattice clocks (Sr, Yb) reach ~10⁻¹⁸. The second links to the metre via the defined speed of light c = 299,792,458 m/s exactly. 1 s = 1,000 ms = 1/60 min.
About Microseconds
A microsecond (µs) = 10⁻⁶ s; light travels ~300 m. Professional DSLR shutters reach 125 µs (1/8,000 s); electronic flash freezes motion in 1-50 µs. Radar pulse repetition intervals: 100-2,000 µs (15-300 km range). Ultrasound echo round-trips from 1-15 cm tissue depth: 13-200 µs. Muscle twitch contraction starts within 1-5 µs of the action potential. 1 µs = 10⁻⁶ s.
Quick Reference Table
| Seconds (s) | Microseconds (µs) |
|---|---|
| 1 s | 1000000 µs |
| 2 s | 2000000 µs |
| 5 s | 5000000 µs |
| 10 s | 10000000 µs |
| 25 s | 25000000 µs |
| 50 s | 50000000 µs |
| 100 s | 100000000 µs |