Convert a date or datetime string into Unix seconds, milliseconds, microseconds or nanoseconds. Runs in your browser, nothing is uploaded. All processing runs locally in your browser. Your data is not uploaded to any server.
100% Local Processing
How to Use
Type or paste any date and get every Unix epoch variant at once. Useful when an API expects a number but your data lives in strings.
Steps
Type or paste a date into the input box.
Click Convert to Timestamp.
Copy the precision you need: seconds, milliseconds, microseconds or nanoseconds.
Accepted input formats
ISO 8601 with or without an offset, such as 2026-09-20T12:00:00+08:00.
Dates ending in Z, which means UTC.
RFC 2822 strings such as Sun, 20 Sep 2026 12:00:00 GMT.
Plain dates such as 2026-09-20, interpreted as UTC midnight.
Features
All four epoch precisions are returned together.
Microseconds and nanoseconds are exact integers, never rounded floats.
Your own timezone offset is printed so you can verify the parse.
All processing runs locally in your browser. Your data is not uploaded to any server.