# Time Unit Conversion

- century
- day [d]
- decade
- femtosecond [fs]
- fortnight
- hour [h]
- microsecond [μs]
- millennium
- millisecond [ms]
- minute [min]
- month (Common)
- month (Synodic)
- nanosecond [ns]
- picosecond [ps]
- quarter (Common)
- second [s]
- shake
- week
- year (Common) [y]
- year (Gregorian)
- year (Julian)
- year (Leap)
- year (Tropical)

## Quick notes on time units

The below will give you a quick glance on each time unit. Helping you to find an conversion answer as quickly as possible is always our top priority.

**century**1 century = 100 years.

**day [d]**1 day = 24 hours.

**decade**1 decade = 10 years.

**femtosecond [fs]**1 femtosecond = 10

^{−15}second

**fortnight**1 fortnight = 14 days.

**hour [h]**1 hour = 60 minutes.

**microsecond [μs]**1 microsecond = 10

^{-6}second.

**millennium**1 millennium = 1000 years.

**millisecond [ms]**1 millisecond = 10

^{-3}second.

**minute [min]**1 minute = 60 seconds.

**month (Common)**A month is 30 days in September, April, June and November, all the rest months have 31 days, except for February, which has 28 days except in a Leap Year when it has 29 days. The tropical year is approximately 365 days, 5 hours, 48 minutes, 45 seconds (=365.24219 days), so 1 month = 365.24219/12.

**month (Synodic)**The synodic month is the period of the Moon's phases. The long-term average duration is 29.530589 days (29 d 12 h 44 min 2.9 s). The synodic month is used to calculate eclipse cycles.

**nanosecond [ns]**1 nanosecond = 10

^{-9}second.

**picosecond [ps]**1 picosecond = 10

^{-12}second.

**quarter (Common)**1 quarter = 3 months.

**second [s]**A second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.

**shake**1 shake = 10

^{-8}second.

**week**1 week = 7 days.

**year (Common) [y]**1 common year = 365 days = 31536000 seconds.

**year (Gregorian)**1 Gregorian year = 365.2425 days = 31556952 seconds.

**year (Julian)**1 Julian year = 365.25 days = 31557600 seconds.

**year (Leap)**1 leap year = 366 days = 31622400 seconds.

**year (Tropical)**1 tropical year = 365.24219 days = 31556925 seconds.