Timestamp guide
How to Convert a Unix Timestamp Online — Free Tool
Unix timestamps count seconds (or milliseconds) since 1 January 1970 UTC. Logs, databases, and APIs often store time this way; humans need local dates, ISO strings, and relative phrases like “2 hours ago.” The converter below accepts epoch input or calendar dates and shows results in your timezone.
Enter the Unix timestamp
Paste the number from your log or API—usually 10 digits for seconds or 13 for milliseconds. The tool auto-detects the unit and shows a hint when the value looks like milliseconds.
What you'll see Screenshot: Timestamp input with 1717200000 entered and a label indicating seconds detected.
Read the human-readable date
The result panel lists local time, UTC, ISO-8601, and RFC-style output depending on the format chips you select. Use this to confirm whether a token exp claim or log entry matches the moment you expect.
What you'll see Screenshot: Result textarea showing ISO and local date lines for the entered epoch.
Convert date to timestamp (reverse)
To encode a meeting time or deadline, switch to the date → Unix section: pick a date, time, and timezone, then copy the generated epoch for your query or JWT exp claim.
What you'll see Screenshot: Date and time inputs with timezone dropdown and generated Unix seconds in the output area.
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Always confirm whether your system uses seconds or milliseconds—mixing them is a common bug. For recurring debugging, keep the full timestamp tool handy alongside JWT decode when inspecting exp and iat claims.
Unix Timestamp Converter
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