Unix Timestamp & Epoch Converter

Timestamp (Seconds)

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Timestamp (Milliseconds)

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ISO 8601

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UTC

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Local Time

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Relative

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How to use this date-time converter

  1. Type a Unix timestamp in seconds or milliseconds, click "Use current time", or pick a date & time directly.
  2. Every format (seconds, milliseconds, ISO 8601, UTC, local time, relative) updates instantly and stays in sync.
  3. Copy whichever format your system or API needs.

What is a Unix timestamp?

A Unix timestamp counts the number of seconds elapsed since January 1, 1970 (UTC), known as the Unix epoch. It's a compact, timezone-independent way to store dates in databases and APIs.

Why does my local time look different from UTC?

UTC is a fixed reference point with no timezone offset. Your "Local Time" is calculated using your device's timezone setting, which is why the two can differ by several hours.

Is this timestamp in seconds or milliseconds?

This tool automatically detects the unit — values below 100,000,000,000 are treated as seconds, larger values as milliseconds, following the standard 10-digit vs. 13-digit convention.

Can I convert a date back to a Unix timestamp?

Yes — use the date & time picker to enter any local date and time, and the timestamp (in both seconds and milliseconds), ISO, UTC and relative values update automatically.