Unix Timestamp Converter
Convert between Unix time, ISO 8601, and human-readable dates
How it works
- 1Watch the current time
The current Unix timestamp updates live at the top in both seconds and milliseconds.
- 2Paste a timestamp or date
Enter a number, an ISO 8601 string, or 'now' — the tool auto-detects the format.
- 3Read all formats
Get Unix (s/ms), ISO, UTC, local, and a human-friendly relative time.
About Unix Timestamp Converter
Free online Unix timestamp converter. Convert seconds or milliseconds to ISO 8601, UTC, and your local time — or paste any date string to see all formats. Shows the current epoch time updating live. Runs entirely in your browser. Unix Timestamp Converter on 712 Tools runs entirely inside your browser using modern JavaScript APIs — no server ever sees your data. That means instant results, complete privacy, and no upload limits.
Whether you need to convert between unix time, iso 8601, and human-readable dates for a debugging session, a quick sanity check, or a production incident, this tool is free to use as many times as you need. There are no watermarks, no sign-up, and no ads inside the tool itself.
Frequently asked questions
Seconds or milliseconds?
Unix timestamps are traditionally in seconds. JavaScript's Date.now() returns milliseconds. Use the dropdown to switch.
Which timezone is used?
'Local' uses your browser's timezone. 'UTC' and 'ISO' are always in UTC (Z suffix).
What date formats are accepted?
Anything the JavaScript Date constructor understands — ISO 8601, RFC 2822, and common variants like '2026-08-16 14:30'.
Read more
The Unix timestamp cheat sheet every developer wishes they had bookmarked
Seconds vs milliseconds vs microseconds, ISO 8601 vs RFC 3339, timezones, DST, leap seconds — the reference for every 'wait, is this in ms?' moment.
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