Time Converter
Developer tool to convert between Unix timestamps and human-readable dates, supporting various formats.
About Time Converter
Convert Unix seconds or milliseconds and inspect formatted dates.
Choose the timestamp unit explicitly. Switching units preserves the instant; use the local date picker for browser-local time.
Copy a timestamp or date format for logs. UTC and local output describe the same instant.
The calculation or rendering runs in this browser tab. Copy, download and share actions make the chosen output available outside this tab.
Worked example
- Input / settings
- 0 seconds
- Action
- Convert, then switch to milliseconds
- Result
- 1970-01-01T00:00:00.000Z; 0 milliseconds.
Scope and limits
- Seconds accept at most three decimal places; milliseconds must be integers. The supported millisecond range is ±8,640,000,000,000,000. Invalid input clears the current date result.
Frequently asked questions
- Are custom formats private when shared?
- Formats are stored locally, but the share URL contains format configuration. Recipients and systems handling the URL can read it; it is not encrypted.
For account, sync, advertising and analytics data flows, see the Privacy Policy.