Date Format Standardizer
Choose the input convention to disambiguate numeric dates, then select an output format.
A QUICK WALKTHROUGH
How to use this tool
- Choose ISO (YYYY-MM-DD), US (MM/DD/YYYY), or EU (DD/MM/YYYY).
- Enter a date and validate it.
- Choose an output format and copy the standardized date.
Explicit conventions
ISO uses year-month-day, US uses month/day/year, and EU uses day/month/year. Selecting the convention removes numeric-date ambiguity.
Date-only behavior
The tool validates Gregorian calendar dates and formats the date components directly. It does not interpret times or convert time zones.
GOOD TO KNOW
Common questions
Is 03/04 ambiguous?
It is interpreted according to the selected US or EU input convention.
Are times or time zones involved?
No. Only date components are processed.
Does my date leave the browser?
No. Parsing and formatting are local.