Timestamp Converter
Convert Unix timestamps to readable dates and back. Supports all timezones. Free and instant.
Unix Timestamp → Date
UTC—
Local—
ISO 8601—
Date → Unix Timestamp
How to Use
- Enter a Unix timestamp (in seconds or milliseconds) into the input field. Click "Use Now" to auto-fill the current timestamp. The tool accepts both 10-digit (seconds) and 13-digit (milliseconds) values.
- See the timestamp instantly rendered in UTC, Local (browser timezone), and ISO 8601 formats. To convert a date back, pick a date and time in the date picker — the corresponding Unix seconds and milliseconds are shown below.
- Click the Copy button next to any output row to copy that specific format to your clipboard.
Frequently Asked Questions
- What formats are supported?
- The tool converts Unix timestamps (seconds or milliseconds) to UTC, Local (browser timezone), and ISO 8601 string formats — and back from a date/time picker to Unix seconds and milliseconds.
- How do I tell if a timestamp is in seconds or milliseconds?
- Unix timestamps in seconds are 10 digits (e.g. 1700000000), while millisecond timestamps are 13 digits (e.g. 1700000000000). The current Unix second timestamp shown at the top is a good reference point.
- Is there a size limit?
- No hard limit. Very large inputs may slow your browser.