Time Unit Converter
Free time converter: seconds to minutes, hours to days, days to years and more. Durations from nanoseconds to years, with year and month definitions stated.
How to use Time Converter
- 1Enter a duration, such as 5 or 90.5.
- 2Choose the From and To units, for example days to hours.
- 3Read the result, or use All units to see the same duration from nanoseconds to years.
What makes it better
- Nanoseconds to years in one table
- States its definitions: 1 day = 86,400 s, 1 year = 365.25 days
- Exact integer factors for every unit up to the year
- Convert mode for one pair, All units mode for the whole list
About Time Converter
Time Converter changes a duration between nanoseconds, microseconds, milliseconds, seconds, minutes, hours, days, weeks, average months and years. A day is exactly 24 hours, an average month is 30.4375 days and a year is the Julian year of 365.25 days. It converts lengths of time, not calendar dates, so leap years and daylight saving are ignored.
Common uses
- Find out how many hours are in a week for a project estimate.
- Turn a build or video length from milliseconds into minutes and seconds.
- Work out roughly how many days a 10,000-hour practice goal takes.
- Express a service-level or timeout value in the unit another tool expects.
Example
Input
5
Result
5 day = 120 h
Good to know
- A year here is the Julian year of 365.25 days (31,557,600 s) and a month is one twelfth of it, 30.4375 days. A calendar year has 365 or 366 days and months have 28 to 31.
- A day is exactly 24 hours. Leap seconds and daylight saving changes are not modelled.
- For exact calendar differences between two dates, use a date difference calculator instead of converting units.
Time Converter FAQ
How many seconds are in a day?
There are 86,400 seconds in a day (24 × 60 × 60). Pick day as From and s as To to confirm it, or use All units to see the day in minutes, hours and weeks too.
How many hours are in a week?
A week has 168 hours (7 × 24), which is 10,080 minutes or 604,800 seconds. Select week as From and h as To for a direct answer.
How many days are in a year for this converter?
It uses 365.25 days, the Julian year, which averages leap years in. A normal calendar year has 365 days and a leap year 366, so use a calendar tool for exact date work.
How many milliseconds are in a second?
There are 1,000 milliseconds in a second and 1,000,000 microseconds. A nanosecond is one billionth of a second, so a 3 GHz processor cycle lasts about one third of a nanosecond.