Calculate time and date difference or time span between two dates and times. Counts actual years, months, days, hours, minutes and seconds based on the dates you submit; a year is 365 days and a leap year is 366 days.

Related Calculator: Date ± Days

For US date formatting style use a forward slash (/), a period (.), or a dash (-):

mm/dd/yyyy

mm.dd.yyyy

mm-dd-yyyy

For EU or European date formatting style use a forward slash (/), a period (.), or a dash (-):

dd/mm/yyyy

dd.mm.yyyy

dd-mm-yyyy

For international date formatting style according to ISO 8601 use only a dash (-):

yyyy-mm-dd

Today's date is based on Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC).

Both time inputs should use the same format, hh:mm:ss as hours:minutes:seconds. If you use AM and PM you must have hours but minutes and seconds are optional. If you do not use AM and PM you must have hours and minutes but seconds are optional. If you enter 24 hour clock notation, hours and minutes are required while seconds are optional.

Use this calculator as a days and time difference calculator. Calculate time elapsed between 2 dates and times.