Unix Timestamps Explained — Epoch Time Reference
Convert Unix timestamps to human dates and back with live current timestamp.
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The problem
You're looking at a database record, a log entry, or an API response and the date is 1716854400. Is that today? Last week? 1970? Unix timestamps are everywhere in programming — database columns, JWT expiry fields, log files, API responses — but they're completely unreadable without conversion. Pasting them into a search engine works, but it's slow and you're sending your data to Google.
How it works
- Paste a Unix timestamp to see the human-readable date and time in your local timezone — and UTC.
- Or pick a date and time to get the corresponding Unix timestamp.
- Watch the live counter — the current timestamp updates in real time so you can see "right now" as a number.
Your data never leaves your browser. All processing happens locally.
When to use this tool
Reading timestamps from databases, APIs, or log files. Generating timestamps for test data. Checking when a JWT or TLS certificate expires. Figuring out if a scheduled job ran at the right time. Any time you see a 10-digit number in a technical context and need to know what date it is.
Why I built it
I read Unix timestamps in logs and databases daily. Every time, I'd paste them into a search engine or open a Python REPL and type datetime.fromtimestamp(). I wanted something faster — a tab I keep open that shows the current timestamp and converts instantly, without any search engine in the middle.
Tips and reference
Notable Unix timestamps worth knowing:
| Timestamp | Date | Significance |
|---|---|---|
| 0 | Jan 1, 1970 00:00:00 UTC | The Unix epoch — the reference point for all timestamps |
| 1,000,000,000 | Sep 9, 2001 | First 10-digit milestone |
| 1,234,567,890 | Feb 13, 2009 | The "easy to remember" timestamp — celebrated by programmers |
| 1,700,000,000 | Nov 14, 2023 | Recent round-number milestone |
| 2,000,000,000 | May 18, 2033 | Next major milestone |
| 2,147,483,647 | Jan 19, 2038 | Y2K38 — max value for a 32-bit signed integer |
Unix timestamps are always in seconds since the epoch. If you see a 13-digit number, it's probably milliseconds — divide by 1000 to get the standard timestamp.
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