Number of days between July 14th, 2021 and October 14th, 2031
The total number of days between Wednesday, July 14th, 2021 and Tuesday, October 14th, 2031 is 3,744 days.
This is equal to 10 years and 3 months.
This does not include the end date, so it's accurate if you're measuring your age in days, or the total days between the start and end date. But if you want the duration of an event that includes both the starting date and the ending date, then it would actually be 3,745 days.