What this tool does
Unix time counts the number of seconds or milliseconds since January 1, 1970 UTC. This tool converts between that number and readable dates.
Unix Timestamp Converter
Convert Unix timestamps into readable dates, or turn a local date and time into Unix seconds and milliseconds. The calculations happen entirely in your browser, so nothing is uploaded or stored on the server. You can also see how far a time is from now in plain language.
Detected unit
Waiting for input
Local time
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UTC time
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ISO 8601
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Relative time
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Unix seconds
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Unix milliseconds
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UTC preview
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Relative time
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Why it is private
All date parsing and timestamp math happen locally in the browser. Your values never leave the page or touch server memory.
What it is useful for
- Reading timestamps from logs, APIs, databases, and monitoring tools.
- Generating Unix seconds or milliseconds for testing payloads.
- Comparing local time with UTC so timezone handling is easier to understand.
- Seeing whether a timestamp is in the past or future in plain language like “2 hours ago” or “in 3 days.”
Important note
Unix timestamps are based on UTC. A human-readable time can look different locally because your browser also shows the time in your local timezone.