Converting Dates Online

This website calculates the duration, which is the day count and the number of days, months and years between two dates. Among other things, it can be used to find how many days old you are and the weekday you were born.

Days from date calculator

This site provides an online "Days From Date" calculator to help you find the date that occurs exactly X days from a particular date. You can also enter a negative number to find out when X days before that date happened to fall. You can use this tool to figure out a deadline if you have a certain number of days remaining. Or read the full page to learn more about the due date if you're counting business days or weekdays only, skipping Saturday and Sunday.

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Days before date calculator

This site provides an online "Days Before Date" calculator to help you find the date that occurs exactly X days before a particular date. You can also enter a negative number to find out when X days before that date happened to fall. You can use this tool to figure out a deadline if you have a certain number of days remaining. Or read the full page to learn more about the due date if you're counting business days or weekdays only, skipping Saturday and Sunday.

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Date range calculator

Simply enter the start and end date to calculate the duration of any event. You can also use this tool to determine how many days have passed since your birthday, or measure the amount of time until your baby's due date.

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convert-dates.com