To get your age in days or measure the duration of an event. You may also want to find out how many daysĪre between two dates on the calendar. Type in your own numbers in the form to convert the units! Use this page to learn how to convert between seconds and milliseconds. Note that rounding errors may occur, so always check the results. You can view more details on each measurement unit: We assume you are converting between second and millisecond. ›› More information from the unit converter
