About the Unix Timestamp Converter
What is the Unix Timestamp Converter?
A Unix timestamp counts seconds since 1 January 1970 UTC. This unix timestamp converter turns it into a readable date, or a date into a timestamp.
Millisecond timestamps (13 digits, as used by JavaScript) are detected automatically.
How to use the Unix Timestamp Converter
- Convert (sample: Unix timestamp → date)
- Unix Timestamp (seconds or milliseconds) (sample: 1,79,00,00,000)
- Date and Time (sample: 2026-10-22T17:06)
- Time Zone (sample: India – IST)
- Press Convert Timestamp (results also refresh as you type). The result card shows the Result, along with Input read as, Unix seconds, Unix milliseconds and Local time.
Formula used
Timestamp = (Date − 1970-01-01T00:00:00Z) in seconds
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Convert | Unix timestamp → date |
| Unix Timestamp (seconds or milliseconds) | 1,79,00,00,000 |
| Date and Time | 2026-10-22T17:06 |
| Time Zone | India – IST |
| Result | Value |
|---|---|
| Result | Mon, 21 Sep 2026, 07:43:20 PM |
| Input read as | Seconds |
| Unix seconds | 1790000000 |
| Unix milliseconds | 1790000000000 |
| Local time | Mon, 21 Sep 2026, 07:43 PM (IST) |
| ISO 8601 (UTC) | 2026-09-21T14:13:20Z |
| RFC 2822 | Mon, 21 Sep 2026 19:43:20 +0530 |
| Year-2038 limit | Fits in a signed 32-bit integer |
Tips for using the Unix Timestamp Converter
- Timestamps are always UTC; the time zone only changes how the date is displayed.
- Signed 32-bit timestamps overflow on 19 January 2038 – use 64-bit storage.