Time Converter
Convert between units of time, from microseconds to years. Months and years vary in length on the calendar, so they use average values: a 365.25-day year and a 30.4375-day month.
Convert minutes
Convert hours
Convert seconds
Convert days
Convert weeks
Convert years
Convert months
Convert milliseconds
Convert microseconds
Time units
- Minute (min)
- A minute is exactly 60 seconds, one sixtieth of an hour.
- Hour (h)
- An hour is 60 minutes, exactly 3,600 seconds. There are 24 hours in a day.
- Second (s)
- The second is the SI base unit of time, defined as 9,192,631,770 periods of the radiation from a specific transition of the cesium-133 atom.
- Day (d)
- A day is 24 hours, exactly 86,400 seconds. It is based on the time the Earth takes to rotate once relative to the Sun.
- Week (wk)
- A week is 7 days, exactly 604,800 seconds or 168 hours.
- Year (yr)
- A year is the time the Earth takes to orbit the Sun, about 365.25 days. Calendar years have 365 days, or 366 in a leap year.
- Month (mo)
- A month is one of the twelve divisions of the calendar year, lasting 28 to 31 days. Its average length is about 30.44 days.
- Millisecond (ms)
- A millisecond is one thousandth of a second. It is used for computer response times, network latency and audio and video timing.
- Microsecond (µs)
- A microsecond is one millionth of a second, or one thousandth of a millisecond. It is used in electronics, computing and high-speed measurement.
- Nanosecond (ns)
- A nanosecond is one billionth of a second. It is used for processor and memory timing and in physics.
- Fortnight (fn)
- A fortnight is 14 days, or two weeks. The word is common in the United Kingdom, Ireland, Australia and New Zealand.
- Decade (dec)
- A decade is a period of 10 years.
- Century (c)
- A century is a period of 100 years.