Contact

Tools  /  Time  /  Timestamp Converter

TIME

Timestamp Converter

Unix time to a readable date, and any date back to Unix time.

More Time tools

Cron Expression Tester Time Zone Converter Date Difference Calculator Student GPA Calculator Cron Builder & Explainer

What this tool does

Converts a timestamp or date in any direction — Unix seconds, Unix milliseconds, ISO 8601, or a plain date string all parse in, and the result is shown as every common format at once, rather than one input format converting to one fixed output.

Flexible input, auto-detected

Typing a value with auto-detect on figures out whether it's Unix seconds, Unix milliseconds, or an ISO/date string based on its length and shape, or the format can be picked explicitly when a value is ambiguous. A swap button feeds the converted time straight back in as a new input for a quick round-trip check.

Every common output at once

Unix seconds, Unix milliseconds, ISO 8601, RFC 2822/UTC, a local date string, relative time ("3 hours ago"), day of the week, day of the year, and the ISO week number are all shown together — plus a fully custom format pattern (using tokens like YYYY-MM-DD HH:mm:ss) that's directly editable and updates live.

The same instant, every time zone

A dedicated table shows the exact same instant converted into 11 major world time zones simultaneously — Local, UTC, New York, Los Angeles, London, Paris, Dhaka, Kolkata, Tokyo, Shanghai, and Sydney — useful for scheduling across regions without converting one zone at a time.

Privacy

All conversion runs locally in your browser -- nothing you type is sent to a server.

FAQ

Frequently asked questions

Is my data uploaded anywhere?
No. Every conversion runs entirely in the browser -- nothing is sent to a server.
How does auto-detect tell Unix seconds from Unix milliseconds apart?
It checks the number's length -- a value with up to 11 digits is treated as seconds, and 12 or more digits as milliseconds, matching how real Unix timestamps grow over time. The format can also be picked explicitly if a value is ambiguous.
Can I write my own custom date format?
Yes -- a custom format field accepts pattern tokens like YYYY, MM, DD, HH, mm, ss, hh:mm A and more, updating live as the pattern is edited.
Can I see the same moment in multiple time zones at once?
Yes -- a dedicated table converts the current timestamp into 11 world time zones simultaneously (Local, UTC, New York, Los Angeles, London, Paris, Dhaka, Kolkata, Tokyo, Shanghai, Sydney), rather than switching one zone at a time.
Does it show relative time, like "3 hours ago"?
Yes -- a relative-time row shows the timestamp's distance from right now in the largest sensible unit, past or future.
What is the ISO week number?
The week number as defined by the ISO 8601 standard, where week 1 is the week containing the year's first Thursday -- shown alongside day-of-year for scheduling or reporting that uses week-based dates.
Theme Accent