Time tools
Time Converter
Convert small time intervals, calendar periods, work scheduling units, and scientific time scales.
Choose units to see the conversion formula.
Popular time unit conversions
Complete list of time units for conversion
| Unit | Symbol | Conversion factor |
|---|---|---|
| second | s | Base unit: 1 second |
| millisecond | ms | 1 millisecond [ms] = 0.001 second [s] |
| microsecond | µs | 1 microsecond [µs] = 0.000001 second [s] |
| nanosecond | ns | 1 nanosecond [ns] = 1.000000000000E-9 second [s] |
| minute | min | 1 minute [min] = 60 second [s] |
| hour | h | 1 hour [h] = 3600 second [s] |
| day | d | 1 day [d] = 86400 second [s] |
| week | wk | 1 week [wk] = 604800 second [s] |
| fortnight | fortnight | 1 fortnight [fortnight] = 1209600 second [s] |
| month (average) | mo | 1 month (average) [mo] = 2629746 second [s] |
| quarter (average) | qtr | 1 quarter (average) [qtr] = 7889238 second [s] |
| year (average Gregorian) | yr | 1 year (average Gregorian) [yr] = 31556952 second [s] |
| common year | common yr | 1 common year [common yr] = 31536000 second [s] |
| leap year | leap yr | 1 leap year [leap yr] = 31622400 second [s] |
| decade | dec | 1 decade [dec] = 315569520 second [s] |
| century | century | 1 century [century] = 3155695200 second [s] |
| millennium | millennium | 1 millennium [millennium] = 31556952000 second [s] |
| sidereal day | sidereal day | 1 sidereal day [sidereal day] = 86164.090500000006 second [s] |