Convert Millisecond (ms) to Second (Sidereal) (s (sidereal)) instantly.
About these units
Millisecond (ms)
A millisecond is one thousandth of a second (10⁻³ s) and is widely used in computing, acoustics, engineering, human physiology, and real-time data processing. Human reaction times fall roughly between 100–300 milliseconds, making the ms an intuitive unit for expressing biological responsiveness. Musicians and audio engineers rely on milliseconds to define echo delays, reverb times, and audio compression parameters. In computing and network communications, milliseconds determine response latency, server performance, and frame times in video rendering. Systems such as financial trading, multiplayer gaming, and robotics depend heavily on millisecond-scale precision. The millisecond bridges human perceptual limits and the faster, computation-driven processes that shape modern technology.
Second (Sidereal) (s (sidereal))
A sidereal second is 1/60 of a sidereal minute, equal to about 0.99727 solar seconds. While the difference seems small, it accumulates noticeably over long observing sessions. Sidereal seconds ensure that telescope mounts and tracking systems remain synchronized with the rotation of the celestial sphere. The distinction between solar and sidereal seconds underscores the complexity of Earth's rotational dynamics—reminding us that even "one second" depends on which cosmic frame of reference we choose.