Everything runs locally. The timestamp you paste is parsed on the page, formatted with your browser's own time zone data, and never uploaded or logged. It keeps working offline once the page has loaded, and the live counter at the top always shows the current Unix time.
Unix Timestamp Converter
Runs entirely in your browser - no upload, no sign-up.
Epoch & Unix timestamp
Current Unix timestamp-
Timestamp to date
Detected: seconds
- UTC
- -
- Your local time
- -
- ISO 8601 (UTC)
- -
- Relative
- -
Date to timestamp
Unix seconds-
Unix milliseconds-
What is a Unix timestamp?
A Unix timestamp (epoch time) is the number of seconds elapsed since 00:00:00 UTC on 1 January 1970, ignoring leap seconds. This converter turns any epoch value - seconds or milliseconds, detected automatically - into a readable UTC and local date, and converts a calendar date back into Unix seconds and milliseconds.
How to use
- 1Paste a timestamp. Type or paste an epoch value such as 1700000000. The tool detects whether it is seconds or milliseconds from its size; use the unit menu to override the guess.
- 2Read the date. The UTC time, your local time, the ISO 8601 form and a relative reading like "2 years ago" all update instantly as you type.
- 3Convert a date back. Pick a date and time in the lower panel, choose whether it is local or UTC wall time, and copy the resulting Unix seconds or milliseconds.
Who it's for
- Developers decoding epoch values found in API responses, JWT expiry claims, database rows and server logs into dates a human can read.
- Data analysts converting timestamp columns from JSON or CSV exports before building a report or chart.
- DevOps and sysadmins checking cron runs, certificate validity windows, cache TTLs and kernel or access-log entries.
- Community managers grabbing the exact Unix timestamp that Discord-style embeds, bots and scheduled events expect.
- Anyone who pasted a mysterious 10 or 13-digit number from an app or spreadsheet and wants to know which date it hides.
FAQ
Is this Unix timestamp converter free and private?
Yes - it is 100% free with no sign-up and no limits. The conversion runs entirely in your browser: the timestamps and dates you enter are never uploaded, stored or logged anywhere.
How do I tell Unix seconds from milliseconds?
By length: current epoch values have 10 digits in seconds and 13 in milliseconds. Unix tools like date +%s and Python's time.time() work in seconds, while JavaScript's Date.now() and Java's System.currentTimeMillis() return milliseconds. This converter detects the unit automatically and lets you override it.
Does Unix time include leap seconds?
No. Unix time pretends every day is exactly 86,400 seconds long, so the leap seconds added to UTC since 1972 are not counted - the Unix clock effectively repeats or smears a second instead. For everyday conversion this makes no visible difference.
What is the Year 2038 problem?
Systems that store Unix time as a signed 32-bit integer overflow at 2,147,483,647 - which is 03:14:07 UTC on 19 January 2038. Modern 64-bit systems, and this converter, are unaffected and handle dates hundreds of thousands of years in either direction.
Can a Unix timestamp be negative?
Yes. Negative values simply count seconds backwards from the epoch, so they represent dates before 1 January 1970. For example, -86400 is 31 December 1969 at 00:00 UTC. Paste one and the converter reads it like any other value.
Why is the converted time different from my wall clock?
A Unix timestamp is anchored to UTC and has no time zone of its own. The UTC row shows the universal reading, while the local row applies your device's time-zone offset - the same timestamp is simply displayed two ways, and daylight saving can shift the local reading by an hour.
How do I get the current Unix timestamp?
It is ticking live at the top of this tool - press Copy to grab it, or Use to convert it. In code, use date +%s in a shell, Date.now() in JavaScript (milliseconds), or time.time() in Python (seconds).