⏱️ Time converter

Convert between milliseconds, seconds, minutes, hours, days, weeks, months and years. Enter a value and pick its unit to see it in every other unit.

Value

Unit

The value in every time unit
Unit	Value
Milliseconds (ms)	1
Seconds (s)	0.001
Minutes (min)	0.000016666667
Hours (h)	2.7777778 × 10⁻⁷
Days (d)	1.1574074 × 10⁻⁸
Weeks (wk)	1.6534392 × 10⁻⁹
Months (mo)	3.8026486 × 10⁻¹⁰
Years (yr)	3.1688739 × 10⁻¹¹
Microseconds (µs)	1,000
Nanoseconds (ns)	1,000,000
Decades (dec)	3.1688739 × 10⁻¹²

Popular time conversions

Conversion	Rate
Milliseconds to seconds	1 ms = 0.001 s
Seconds to milliseconds	1 s = 1,000 ms
Seconds to minutes	1 s = 0.016666667 min
Minutes to hours	1 min = 0.016666667 h
Hours to minutes	1 h = 60 min
Days to years	1 d = 0.002737907 yr
Years to hours	1 yr = 8,765.82 h
Weeks to days	1 wk = 7 d

About time units

Seconds, minutes, hours, days and weeks are fixed lengths. Months and years are not, so this converter uses averages from the Gregorian calendar: a year of 365.2425 days and a month of one twelfth of that.

Time units

Unit	Symbol	In seconds
Millisecond	ms	0.001 s
Second	s	1 s
Minute	min	60 s
Hour	h	3,600 s
Day	d	86,400 s
Week	wk	604,800 s
Month	mo	2,629,746 s
Year	yr	31,556,952 s
Microsecond	µs	0.000001 s
Nanosecond	ns	1 × 10⁻⁹ s
Decade	dec	315,569,520 s

All time conversions

From milliseconds

From seconds

From minutes

From hours

From days

From weeks

From months

From years

From microseconds

From nanoseconds

From decades

Time unit definitions

Millisecond (ms): A millisecond is one thousandth of a second. Reaction times, network latency and audio delays are measured in milliseconds.
Second (s): The second is the SI base unit of time, defined by 9,192,631,770 oscillations of a cesium-133 atom.
Minute (min): A minute is 60 seconds.
Hour (h): An hour is 60 minutes, or 3,600 seconds.
Day (d): A day is 24 hours, or 86,400 seconds.
Week (wk): A week is 7 days, or 168 hours.
Month (mo): An average month on the Gregorian calendar is 30.436875 days, one twelfth of an average year. Real months run from 28 to 31 days.
Year (yr): An average Gregorian year, leap years included, is 365.2425 days. A common year is 365 days and a leap year 366.
Microsecond (µs): A microsecond is one millionth of a second.
Nanosecond (ns): A nanosecond is one billionth of a second, roughly the time light takes to travel 30 centimeters.
Decade (dec): A decade is 10 years. This converter uses 10 average Gregorian years, or 3,652.425 days.