What Is a Date Format Converter?
A date format converter takes a date and displays it in multiple commonly used formats simultaneously. Different countries and systems use different date conventions (MM/DD/YYYY in the US, DD/MM/YYYY in Europe, YYYY-MM-DD in ISO 8601), and this tool shows your date in all major formats at once, including Unix timestamps and RFC 2822.
How to Use This Date Format Converter
- Select a date using the date picker.
- Optionally select a time for timestamp formats.
- Click Convert to see the date in ISO 8601, US, European, Unix timestamp, RFC 2822, and other formats.
Supported Formats
The tool outputs ISO 8601 (YYYY-MM-DD), US format (MM/DD/YYYY), European format (DD/MM/YYYY), Unix timestamp (seconds since 1970-01-01), RFC 2822 (email standard), long date format, and Japanese date format (YYYY年MM月DD日). These cover the most common date formats used in programming, databases, APIs, and international communication.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds elapsed since January 1, 1970 00:00:00 UTC (the Unix epoch). It is widely used in programming and databases because it is timezone-independent and easy to compare mathematically.
Which date format should I use for APIs?
ISO 8601 (YYYY-MM-DDTHH:mm:ssZ) is the recommended format for APIs and data interchange. It is unambiguous, sortable, and internationally recognized. Most modern APIs and standards require or prefer this format.