Worked examples
Choose the timestamp unit before converting. The same instant can have different local clock times. A date with +08:00 is eight hours ahead of UTC; an explicit offset avoids guessing the input time zone.
| Example | Input / settings | Expected result |
|---|---|---|
| Unix epoch in seconds | |
|
| Milliseconds input | |
|
| ISO date with explicit offset | |
|
Rules and limits
Unix time measures elapsed time from 1970-01-01T00:00:00Z. Date input must include Z or an explicit offset. Seconds output rounds down; milliseconds preserve millisecond precision. Local display follows your browser’s time zone.