›› Measurement unit: s

Full name: second

Plural form: seconds

Symbol: s

Alternate spelling: sec

Category type: time

Scale factor: 1




›› Similar units

second
siemens


›› SI unit: second

The SI base unit for time is the second.
1 second is equal to 1 s.


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›› Definition: Second

The second (symbol s) is a unit for time, and one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom at zero kelvins.


›› Sample conversions: s

s to lunar year
s to draconic month
s to sidereal year
s to Julian month
s to week
s to sidereal month
s to microsecond
s to nanosecond
s to anomalistic month
s to decade