Timestamp conversion runs locally in your browser. Nothing is uploaded.
Timestamp Converter
Convert Unix timestamps in seconds or milliseconds into ISO, UTC, and local time, or turn a date string back into Unix time.
Unix time conversion for debugging and scheduling
Use this timestamp converter for logs, API payloads, database records, analytics events, cron schedules, and debugging sessions where Unix time needs to become readable.
The tool auto-detects seconds versus milliseconds by magnitude and parses date strings locally in your browser. Your input is not uploaded or stored.
How to use this tool
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Copy the current Unix time
Use the live current time display when you need the current timestamp in seconds.
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Convert a timestamp to a date
Enter Unix seconds or milliseconds to see ISO 8601, UTC, and local-time output.
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Convert a date to Unix time
Enter a date or ISO string to get Unix seconds and milliseconds.
FAQ
Does this timestamp converter upload my input?
No. All timestamp and date conversions happen locally in your browser.
Can it detect seconds versus milliseconds?
Yes. The tool treats large Unix values as milliseconds and smaller Unix values as seconds.
Which date outputs are shown?
Timestamp input is converted to ISO 8601, UTC string, and your browser's local time string.
What date input formats work?
Most date strings accepted by your browser can be parsed, including ISO strings such as 2026-06-24T12:00:00Z.