Date Format Converter
Advanced date format converter supporting ISO 8601, regional formats, and custom patterns
Use YYYY (year), MM (month), DD (day), HH (hour), mm (minute), ss (second)
Quick Dates
Date Information
Enter a date to see detailed information...
Invalid Date
Auto Detection
Automatically recognizes common date formats and converts accordingly.
Multiple Formats
Supports ISO 8601, regional formats, timestamps, and custom patterns.
Relative Dates
Shows relative formatting like "2 days ago" and "next week".
Custom Patterns
Create custom date patterns for specific formatting requirements.
Frequently Asked Questions
What is ISO 8601 date format?
ISO 8601 is the international standard for date representation: YYYY-MM-DD (e.g., 2024-03-15). It's unambiguous, sortable, and widely used in databases, APIs, and international communication.
How do I handle ambiguous dates like 01/02/2024?
Ambiguous dates can be interpreted as either January 2nd (US format) or February 1st (European format). Use the "Input Format" dropdown to specify the expected format, or use unambiguous formats like ISO 8601.
What are Unix timestamps?
Unix timestamps represent the number of seconds since January 1, 1970, 00:00:00 UTC. They're commonly used in programming and databases for precise, timezone-independent date storage.
Can I create custom date formats?
Yes! Use the custom pattern option with tokens like YYYY (year), MM (month), DD (day), HH (hour), mm (minute), and ss (second) to create any date format you need.
How accurate are relative dates?
Relative dates are calculated from the current moment and are accurate to the second. They automatically update concepts like "2 days ago" or "next week" based on the difference between the entered date and now.
Date Formatting Standards
International Standards
- • ISO 8601: YYYY-MM-DD format
- • RFC 2822: Email date format
- • RFC 3339: Internet date/time format
- • UTC: Coordinated Universal Time
Regional Formats
- • US: MM/DD/YYYY (03/15/2024)
- • Europe: DD/MM/YYYY (15/03/2024)
- • Asia: YYYY/MM/DD (2024/03/15)
- • Custom: Any pattern you define
Developer Tip: When building applications, always store dates in UTC using ISO 8601 format in your database. Format dates for display based on user preferences and timezone. This ensures consistency and prevents date/time related bugs.