Free Unix Timestamp Converter
Work with Unix time fluently. Watch the current Unix timestamp tick live, convert any timestamp to a readable date, and turn any date into its Unix value — seconds and milliseconds, both directions, all in one compact tool.
How to Use the Unix Timestamp Converter
- See the live Unix clock ticking at the top.
- Paste a timestamp to convert it to a readable date.
- Pick a date to get its Unix timestamp in seconds and ms.
- Copy whichever value you need.
Features
A live clock displays the current Unix time in seconds and milliseconds, updating every second — useful as a reference while debugging. The timestamp-to-date panel auto-detects units and shows UTC, local, and ISO forms; the date-to-timestamp panel outputs both precisions with copy buttons. Everything converts instantly with no submit button.
Benefits & Use Cases
Backend developers correlate log timestamps with real times during incidents; mobile developers convert API epoch values while building; anyone generating test data grabs “now” in Unix form instantly. The live clock doubles as a sanity check that your conversions land in the right era.
Tips
If your converted date lands in 1970, you fed milliseconds to something expecting seconds — or the reverse. This tool auto-detects, but APIs you integrate with will not, so always check which unit a given API documents.
Frequently Asked Questions
What is Unix time?
The count of seconds since the Unix epoch: midnight UTC, 1 January 1970. It is how most systems store time internally — a single number, free of timezone ambiguity.
Why do some timestamps have 13 digits?
Those are milliseconds since the epoch (used by JavaScript’s Date.now()). 10-digit values are seconds. This tool auto-detects which you pasted.
What happens in 2038?
On 32-bit systems, signed 32-bit Unix time overflows on 19 January 2038. Modern 64-bit systems and this tool handle far-future dates without issue.
Is Unix time affected by timezones or DST?
No — it counts absolute seconds since the epoch. Timezones only affect how that instant is displayed, which is why this tool shows both UTC and your local rendering.
Is my input sent anywhere?
No. All conversion runs locally in your browser — nothing is uploaded or stored.
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