ToolNestFree Unix Timestamp Converter
Convert Unix timestamps to dates and back instantly. Paste a 10-digit (seconds) or 13-digit (milliseconds) epoch value — our free converter auto-detects the format and shows the UTC and local date, or turn any date into a timestamp for your code, SQL, or API calls.
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✓ Free forever · ✓ No signup · ✓ Runs in your browser — your data never leaves your device.
How to Use the Unix Timestamp Converter
- Paste a Unix timestamp (10 or 13 digits) and click 'Timestamp → Date'.
- Or type a date like 2026-10-02 12:00 and click 'Date → Timestamp'.
- Use 'current timestamp' to grab the epoch value for right now.
- Copy the result into your code, query, or API payload.
Why Use Our Unix Timestamp Converter?
- Auto-detects seconds vs milliseconds — no more 1970 dates from mixing them up.
- UTC + local time — see both, so timezone bugs don't bite.
- Bidirectional — timestamp to date and date to timestamp.
- Developer-friendly — free, instant, private.
Frequently Asked Questions
What is a Unix timestamp?
The number of seconds since January 1, 1970 00:00:00 UTC. 10 digits = seconds, 13 digits = milliseconds (JavaScript's Date.now()).
Why does my date show 1970?
You probably fed milliseconds to a seconds-expecting function (or vice versa). This tool auto-detects and converts correctly.
Are Unix timestamps timezone-free?
Yes — a timestamp is one absolute moment. Timezones only matter when displaying it, which is why we show UTC and your local time.
What is the Year 2038 problem?
32-bit signed timestamps overflow on Jan 19, 2038. Modern 64-bit systems are unaffected — this tool handles full 64-bit ranges.
Is it free?
Yes — free forever, no signup.