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Convert Unix timestamps to dates and dates to timestamps. Supports seconds and milliseconds.
A Unix timestamp (or Epoch time) is the number of seconds elapsed since January 1, 1970, 00:00:00 UTC. It provides a timezone-agnostic way to represent any point in time as a single integer, widely used in databases, APIs, and programming.
1777477562| Event | Timestamp | Date |
|---|---|---|
| Unix Epoch | 0 | 1970-01-01 |
| 1 Billion | 1000000000 | 2001-09-09 |
| Y2K38 Bug | 2147483647 | 2038-01-19 |
| 2 Billion | 2000000000 | 2033-05-18 |
Math.floor(Date.now() / 1000)import time; int(time.time())time()date +%sFormula
Unix Timestamp = (Date − 1970-01-01T00:00:00Z) in seconds | Milliseconds = Timestamp × 1000Unix Timestamp = Seconds elapsed since the Unix Epoch (1970-01-01 00:00:00 UTC)
Milliseconds = Timestamp multiplied by 1,000 — used by JavaScript and many modern APIs
Max 32-bit = 2,147,483,647 seconds → 2038-01-19 (Y2K38 problem)
Worked Example
Convert 2024-01-01 00:00:00 UTC to Unix timestamp
Did you know? Unix time was invented at Bell Labs in 1969. The original epoch of January 1, 1970 was chosen simply because it was a convenient recent date — not for any mathematical reason.
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