›› Measurement unit: second

Full name: second

Plural form: seconds

Symbol: s

Alternate spelling: sec

Category type: time

Scale factor: 1

›› Similar units


›› SI unit: second

The SI base unit for time is the second.

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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: second

second to shake
second to Julian year
second to century
second to Julian month
second to week
second to lunar year
second to millennium
second to anomalistic month
second to quarter
second to anomalistic year