Date/Time Formatter
Format dates and times in various formats and timezones.
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Output
About Date/Time Formatter
Convert dates and times between different formats. Format timestamps, dates, and times in various styles.
Common Use Cases:
- Converting timestamp formats
- Formatting dates for display
- Timezone conversions
- Date parsing and validation
Frequently Asked Questions
The tool accepts any format that the browser's Date constructor understands, which includes: ISO 8601 (2024-03-15, 2024-03-15T14:30:00Z), human-readable formats (March 15 2024, 15 Mar 2024), US format (03/15/2024), Unix timestamps in seconds (10 digits) or milliseconds (13 digits), and RFC 2822 email date strings. Ambiguous formats like 01/02/2024 (January 2 or February 1?) are interpreted using the browser's locale.
A Unix timestamp is the number of seconds (or milliseconds in JavaScript) that have elapsed since January 1, 1970 at 00:00:00 UTC, known as the "Unix epoch." Timestamps are timezone-independent and are the standard way to store dates in databases, APIs, and system logs. The 10-digit form (e.g., 1710500000) represents seconds; the 13-digit form (e.g., 1710500000000) represents milliseconds.
ISO 8601 is the international standard for representing dates and times: YYYY-MM-DD for dates, YYYY-MM-DDTHH:MM:SSZ for timestamps. It is unambiguous (03/05 means March 5 in the US but May 3 in Europe — ISO 8601 always means March 5), sorts correctly as text, and is recognized by virtually every programming language and database. Use ISO 8601 whenever you store or exchange dates in systems or APIs.