Unix Timestamp Converter
Use this Unix timestamp converter to switch between Unix time, UTC, local time, and ISO date strings. It handles both seconds and milliseconds, updates instantly in the browser, and works without any backend calls.
- detected unit
- seconds
- UTC
- Thu, 02 May 2024 12:00:00 GMT
- Local
- May 02, 2024, 12:00:00 UTC
- ISO 8601
- 2024-05-02T12:00:00.000Z
Pick a date and time to convert.
Example Usage
- Input `1714651200` to get a readable UTC and local date.
- Pick a date with the date-time field to get both seconds and milliseconds.
- Use the live current timestamp block when you need a quick value for logs or APIs.
Unix Timestamp Converter Explained
A Unix timestamp is the number of seconds or milliseconds that have passed since January 1, 1970 UTC. Developers use it in APIs, databases, logs, and blockchain data because it is compact and unambiguous. The problem is that raw timestamps are hard to read at a glance, and some systems use seconds while others use milliseconds. This Unix timestamp converter solves that by detecting the unit, converting it to a human-readable date, and letting you reverse the process from a chosen date back into timestamp values. It runs fully in the browser, so the result is instant and private. If you are debugging an API response, checking event times, or validating stored values, this saves a few repetitive steps every time.
FAQ
Does this Unix timestamp converter support seconds and milliseconds?
Yes. The tool detects the unit automatically based on the size of the number and shows both readable and raw outputs.
Why does my timestamp look off by a few hours?
That is usually a timezone issue. Compare the UTC output with the local output to confirm whether the stored value is correct.
Can I use negative Unix timestamps?
Yes. Negative values represent dates before January 1, 1970 UTC, as long as they stay inside the JavaScript Date range.
Does this tool send data to a server?
No. All conversion logic runs in the browser, so there is no backend dependency for this page.
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