This tool picks a random point in time between January 1st of your start year and January 1st of the year after your end year, then converts that timestamp back into a calendar date, which means every day in the range, including your end year's full 365 (or 366) days, has a genuinely even chance of coming up. It's useful for generating test data, picking a random due date, seeding a fake dataset, or settling on a random anniversary or event date within realistic bounds. You can pull a single date or generate a batch at once, in ISO, US, or locale-friendly format.
Yes, the tool picks a uniformly random instant across the full millisecond span of the range and then converts it to a date, so years with 366 days (leap years) naturally get one extra equally-likely day rather than being skipped or under-weighted.
Yes, set both the start year and end year to the same value and every generated date will fall somewhere within that one calendar year.
Just the date. Internally a random moment in time is used to land on a day fairly, but the time-of-day component is discarded before display, the output is always a calendar date like 2014-01-05.