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Timestamp Converter
Paste a Unix timestamp (seconds or milliseconds) or any date string and instantly see it in every common format — ISO 8601, UTC, your local time, Discord tags, Windows FILETIME, and a human-readable relative time. Auto-detects what you paste; pure browser math. The Social post time → UTC tab converts a time copied from a post, in the zone it was shown in.
Updated 12 October 2026: added the Social post time → UTC mode (time zone picker, daylight-saving checks, day/month ambiguity and relative-time windows).
Convert Unix time, ISO, and Discord timestamps
Logs, APIs, databases, and metadata store time as Unix epoch seconds or milliseconds; investigators and developers constantly need to translate those into readable dates and back. This converter detects the input automatically and outputs every format you are likely to need, including Discord’s dynamic timestamp tags and Windows FILETIME.
How do I convert a social post time to UTC?
Copy the time exactly as shown. Open the Social post time → UTC tab and paste it, for example “3 Oct 2026 at 16:15”, “10/03/26, 4:15 PM” or “2h ago”. Then pick the time zone it was displayed in. The tool gives the UTC time, the time in that zone with its offset, and a second zone if you pick one.
It flags what the text cannot settle. A numeric date like 03/10 can mean 3 October or 10 March, so both are shown. A clock time that happened twice when clocks went back (for example 01:30 on 25 October 2026 in London) gives both moments. A time skipped when clocks went forward (02:30 on 8 March 2026 in New York) is flagged as impossible. A relative time gives a window counted back from when you saw it.
Browser-extension alternative. Bellingcat’s Uniform Timezone extension converts post times to UTC or your local time on the page itself. Its README lists X/Twitter, Instagram, Threads and the Wayback Machine as fully supported, and TikTok, Discord, Bluesky, LinkedIn and Reddit as working in most cases. It is MIT-licensed and installs from the Chrome Web Store for Chrome and Brave. Uniform Timezone README (read 12 Oct 2026)
Frequently asked questions
Related: Platform ID Decoder (creation time from platform IDs) · Coordinate Converter (decimal, DMS, UTM, MGRS, Plus Codes).
What's the difference between Unix seconds and milliseconds?
Unix time counts from 1 January 1970 UTC. Seconds-based timestamps are 10 digits; millisecond timestamps are 13. This tool detects which you pasted and converts accordingly.
Can it generate Discord timestamps?
Yes. It outputs Discord’s timestamp tags, such as t:1700000000:R wrapped in angle brackets, in short-date and relative styles; Discord renders them as live, timezone-aware times in messages.
What is Windows FILETIME?
FILETIME counts 100-nanosecond intervals since 1 January 1601 UTC and appears in Windows artifacts and forensic data. The tool converts your date to and from it.
Which time zone should I pick for a social media post time?
Pick the zone of the device, browser or account that displayed the time, not the poster's location. If the time came from someone else's screenshot, that zone is unknown, so treat the result as a guess and note it.
Why does one post time give two results?
Either the date order is ambiguous, such as 03/10 meaning 3 October or 10 March, or the clock time happened twice on the night clocks went back. Check the weekday, another date on the same page, or the platform's language setting to choose.
Does it work offline / is anything sent anywhere?
All conversion is pure JavaScript in your browser. Nothing is sent to any server.