4.8(2,400 ratings)
Developer Tools
Timestamp Converter
Convert between Unix timestamps, ISO 8601, human readable dates, and any timezone instantly. Supports milliseconds, relative time, and batch conversion. The ultimate time tool for developers and ops.
DST handled via Intl
All conversions use your browser\'s timezone data. 100% private and offline.
Time Is Tricky
Developers constantly juggle Unix timestamps (seconds vs milliseconds), ISO strings, human dates, and different timezones. This converter removes the mental math and copy-paste errors by giving you every common representation side-by-side, with accurate timezone handling via your browser’s Intl implementation (including historical and future DST transitions).
Supported Input Formats
- Unix seconds and milliseconds (auto-detected)
- ISO 8601 strings (with or without milliseconds / Z)
- Common human readable strings your browser can parse
- Batch conversion — one timestamp per line
Pro Tips
- Use the live “Current time” row as a quick reference.
- Batch mode is perfect for cleaning log files or CSVs.
- Relative time helps when reading recent logs or incident timelines.
- Quick offset buttons let you explore “what time is it +1h in other zones?”