Second Conversions
Convert second to and from other units of measurement. Choose from 18 different second conversion calculators below.
About Seconds
The second is the base unit of time in the International System of Units (SI). It's defined by atomic transitions and is the foundation for all other time measurements.
Common Uses
- Daily life: Countdown timers, stopwatches
- Science: Experimental measurements and physics calculations
- Computing: System timestamps and durations
- Sports: Race times and game clocks
SI Base Unit
As an SI base unit, the second is precisely defined using atomic clock measurements, making it one of the most accurately measured units in science.
Convert from Second
Seconds to Centuries Conversion Calculator
Convert seconds to centuries quickly with our free calculator. Find out how many centuries are in seconds.
Use Calculator →Seconds to Days Conversion Calculator
Convert seconds to days quickly with our free calculator. Find out how many days are in seconds.
Use Calculator →Seconds to Decades Conversion Calculator
Convert seconds to decades quickly with our free calculator. Find out how many decades are in seconds.
Use Calculator →Seconds to Hours Conversion Calculator
Convert seconds to hours quickly with our free calculator. Find out how many hours are in seconds.
Use Calculator →Seconds to Millenniums Conversion Calculator
Convert seconds to millenniums quickly with our free calculator. Find out how many millenniums are in seconds.
Use Calculator →Seconds to Milliseconds Conversion Calculator
Convert seconds to milliseconds quickly with our free calculator. Find out how many milliseconds are in a second.
Use Calculator →Seconds to Minutes Conversion Calculator
Convert seconds to minutes quickly with our free calculator. Find out how many minutes are in seconds.
Use Calculator →Seconds to Weeks Conversion Calculator
Convert seconds to weeks quickly with our free calculator. Find out how many weeks are in seconds.
Use Calculator →Seconds to Years Conversion Calculator
Convert seconds to years quickly with our free calculator. Find out how many years are in seconds.
Use Calculator →Convert to Second
Centuries to Seconds Conversion Calculator
Convert centuries to seconds quickly with our free calculator. Find out how many seconds are in a century.
Use Calculator →Days to Seconds Conversion Calculator
Convert days to seconds quickly with our free calculator. Find out how many seconds are in a day.
Use Calculator →Decades to Seconds Conversion Calculator
Convert decades to seconds quickly with our free calculator. Find out how many seconds are in a decade.
Use Calculator →Hours to Seconds Conversion Calculator
Convert hours to seconds quickly with our free calculator. Find out how many seconds are in an hour.
Use Calculator →Millenniums to Seconds Conversion Calculator
Convert millenniums to seconds quickly with our free calculator. Find out how many seconds are in a millennium.
Use Calculator →Milliseconds to Seconds Conversion Calculator
Convert milliseconds to seconds quickly with our free calculator. Find out how many seconds are in a millisecond.
Use Calculator →Minutes to Seconds Conversion Calculator
Convert minutes to seconds quickly with our free calculator. Find out how many seconds are in a minute.
Use Calculator →Weeks to Seconds Conversion Calculator
Convert weeks to seconds quickly with our free calculator. Find out how many seconds are in a week.
Use Calculator →Years to Seconds Conversion Calculator
Convert years to seconds quickly with our free calculator. Find out how many seconds are in a year.
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