Time Converter

Common

Seconds, minutes, hours, days and beyond.

Popular time conversions

How to convert time

All 17 time units are converted through a single base unit, so any unit can be converted to any other. Enter a value, choose the units and press Convert, or open a conversion page for the exact factor and a reference table.

For example, 1 seconds (s) = 0.0166667 minutes (min).

Time unit definitions

Seconds (s)
The second is the SI base unit of time, defined by the frequency of a transition in the caesium-133 atom. All other time units are built from it.
Minutes (min)
A minute is 60 seconds, and 60 minutes make an hour.
Hours (hr)
An hour is 60 minutes or 3,600 seconds, one twenty-fourth of a day.
Days (d)
A day is 24 hours, or 86,400 seconds. A calendar day can be one second longer when a leap second is added.
Weeks (wk)
A week is 7 days, or 168 hours.
Months (mo)
Calendar months vary from 28 to 31 days; this converter uses the average Gregorian month of 30.436875 days (365.2425 days divided by 12).
Years (yr)
This converter uses the average Gregorian calendar year of 365.2425 days, which accounts for leap years. A common year has 365 days and a leap year 366.
Milliseconds (ms)
A millisecond is one thousandth of a second. Network latency, camera shutter speeds and reaction times are measured in milliseconds.
Microseconds (µs)
A microsecond is one millionth of a second, used in electronics and high-speed timing.
Nanoseconds (ns)
A nanosecond is one billionth of a second. Light travels only about 30 centimeters in a nanosecond, which is why it matters in computing.
Decades (dec)
A decade is 10 years.
Centuries (cent)
A century is 100 years.

All time units

Common Units

Small Units

Large Units

Astronomical

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