Unix timestamp converter
Convert Unix timestamps to dates and back — seconds or milliseconds, with ready-to-paste Discord timestamp markup. Free, runs in your browser.
Paste a Unix timestamp in seconds (10 digits) or milliseconds (13 digits) and get the human time in your own timezone instantly — or type a date and read the timestamp back. Conversions run locally in your browser.
The Discord section is why people search for this: Discord renders live <t:seconds:style> tags that show each reader the time in their own timezone. Copy any style — relative (“in 3 months”) is the community favorite for event announcements — and paste it straight into chat.
Round-tripping is exact: the date field and the timestamp field stay in sync as you edit either side, and the “Now” button captures the current moment for quick comparisons.
Frequently asked questions
- Is my timestamp in seconds or milliseconds?
- Both work: 10 digits are treated as seconds, 13 digits as milliseconds. JavaScript and most logs use milliseconds; Unix tooling and Discord use seconds.
- How do Discord timestamps work?
- Discord renders <t:seconds:style> locally for every reader — their timezone, their language. The style letter picks the format: R for relative, F for full date-time, and so on.
- What is the Unix epoch?
- Midnight UTC on 1 January 1970 — second zero. Timestamps count elapsed seconds (or milliseconds) from that moment, which is why they need no timezone.