Curated picks
Unix time converter
Align log lines, API responses, and scheduled jobs across time zones.
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Unix time converter
Accepts ISO-8601 strings, Unix seconds (typical if the number is below ~1e11), or Unix milliseconds. Outputs local string, UTC ISO, and both numeric forms.
Pure numbers: values under 100 billion are treated as seconds; larger values as milliseconds.
Unix time
Unix time counts milliseconds since 1970-01-01T00:00:00.000Z (UTC). APIs often return seconds (JSON number) or ISO strings; browsers use milliseconds in Date.
Time zones
The “Local” line uses your system time zone. UTC ISO is stable for comparing servers and documentation. Always store and transmit instants in UTC when possible.
Privacy
Parsing happens locally; we do not log your input.