Timestamp List Converter
Paste a list of Unix timestamps, one per line, and convert them all to readable UTC and ISO dates at once.
| Input | UTC | ISO 8601 |
|---|---|---|
How it works
Each line is parsed independently; 10-digit values are read as seconds and 13-digit values as milliseconds, then formatted.
Everything is computed locally in your browser — nothing is uploaded.
Frequently asked questions
How many can I convert?
As many as you like — paste one timestamp per line and they are all converted instantly in your browser. Values with 13+ digits are treated as milliseconds.