Date Format Converter
Time
Paste an ISO 8601 string, an RFC 2822 date, a Unix epoch (seconds or milliseconds — auto-detected by digit count), or any free-form date your browser can parse, and get the same instant rendered as ISO local / UTC, RFC 2822, HTTP `Date` (IMF-fixdate), SQL DATETIME, Unix seconds / milliseconds, locale string, date-only / time-only, and day-of-year. Leave the input empty to format "now".
- ISO 8601 (local)2026-06-02T18:03:42.555+00:00
- ISO 8601 (UTC)2026-06-02T18:03:42.555Z
- RFC 2822Tue, 02 Jun 2026 18:03:42 +0000
- HTTP / IMF-fixdateTue, 02 Jun 2026 18:03:42 GMT
- SQL DATETIME (local)2026-06-02 18:03:42
- SQL DATETIME (UTC)2026-06-02 18:03:42
- Unix epoch (seconds)1780423422
- Unix epoch (milliseconds)1780423422555
- Locale (full)Tue Jun 02 2026 18:03:42 GMT+0000 (Coordinated Universal Time)
- Locale (date)6/2/2026
- Locale (time)6:03:42 PM
- Date only2026-06-02
- Time only18:03:42
- Year / Day-of-year2026-153
How to use
- Type or paste a date in any common format.
- Read off the format you need; hit Copy to send it to the clipboard.
- Click Now to clear the input and use the current time.
Frequently asked questions
- How does it tell epoch seconds from milliseconds?
- By digit count. 10-or-11-digit pure-integer input is treated as seconds (Unix timestamps are 10 digits through year 2286); 13-plus digits is milliseconds.
- Why does ISO 8601 local include a timezone offset?
- ISO 8601 requires an offset on local-time strings (`+09:00`, `-05:00`) so the instant is unambiguous. The UTC variant ends in `Z` and the offset is implicit.
- What's IMF-fixdate?
- The format HTTP defines for the `Date`, `Expires`, `Last-Modified`, `Set-Cookie` (Expires=) headers — `Mon, 02 Jun 2026 15:04:05 GMT`. Always UTC.
- Why does the output differ across machines?
- Locale (date / time string) and the local-timezone offset depend on your browser settings. The Unix epoch and ISO UTC values are the same everywhere.
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