Unix Timestamp Converter

A Unix timestamp (also called epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC — a moment known as the Unix epoch. It's a universal, timezone-independent way to represent a specific point in time as a single integer. For example, the timestamp 1700000000 represents November 14, 2023, at 22:13:20 UTC.

Unix timestamps are used extensively in programming, databases, APIs, and system logging because they eliminate timezone ambiguity. Unlike human-readable date strings that can be interpreted differently across locales ("01/02/2024" is January 2nd in the US but February 1st elsewhere), a Unix timestamp always refers to exactly one moment in time. They're also easy to compare, sort, and perform arithmetic on — subtracting two timestamps gives you the difference in seconds.

This Unix timestamp converter lets you convert between timestamps and human-readable dates in any timezone. It shows the current time as a live-updating timestamp, converts timestamps to dates (with automatic seconds/milliseconds detection), and converts date strings to timestamps. All conversions support 400+ timezones and run entirely in your browser.

1. View the current timestamp — The live counter shows the current Unix timestamp in both seconds and milliseconds, updating every second. Click the copy button to copy either value.
2. Select your timezone — Choose from common timezones (UTC, New York, London, Tokyo, etc.) or browse 400+ IANA timezones. Quick-switch buttons let you jump between UTC and your local timezone.
3. Convert timestamp to date — Enter a Unix timestamp (seconds or milliseconds — auto-detected) in the "Timestamp → Date" section and click Convert. The result shows the date in your selected timezone, UTC, and ISO 8601 format.
4. Convert date to timestamp — Enter a date string (e.g., "2024-01-15 12:30:00" or any ISO 8601 format) in the "Date → Timestamp" section and click Convert. You'll get both the seconds and milliseconds timestamp.
5. Copy any result — Every output has a copy button for quick clipboard access.

• Live timestamp counter — Real-time display of the current Unix timestamp in seconds and milliseconds, updating every second.
• Auto-detect seconds vs milliseconds — The converter automatically determines whether your input is in seconds (10 digits) or milliseconds (13 digits). No need to specify the format.
• 400+ timezone support — Full IANA timezone database support via the browser's Intl API. Includes common shortcuts for UTC, US time zones, European cities, and Asian hubs.
• Bidirectional conversion — Convert timestamps to human-readable dates and date strings back to timestamps. Supports ISO 8601, RFC 2822, and common date formats.
• Multi-timezone display — Results show the converted time in your selected timezone, UTC, and your local timezone simultaneously for easy cross-timezone comparison.
• 100% client-side — All conversions use your browser's built-in Date API. No server requests, no data sent anywhere.

• Debugging API timestamps — Convert timestamps from API responses to human-readable dates to verify correctness, especially when dealing with different timestamp formats (seconds vs milliseconds).
• Database queries — Convert between timestamps and dates when writing SQL queries with epoch-based time columns, or when examining database records that store time as integers.
• Log analysis — Convert Unix timestamps in server logs, application logs, or monitoring data to readable dates for troubleshooting and incident response.
• Cross-timezone scheduling — Verify what time a given timestamp represents in different timezones when coordinating across distributed teams or users worldwide.
• JWT and token debugging — Decode iat (issued at), exp (expiration), and nbf (not before) claims in JWTs, which are stored as Unix timestamps.