Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and dates back to timestamps — seconds and milliseconds, in UTC and your local time. Everything runs in your browser.
Current Unix timestamp (seconds)
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Timestamp to date
Date to timestamp
Frequently Asked Questions
- What is a Unix timestamp?
- A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It is a compact, timezone-independent way for computers to store a moment in time.
- How do I tell seconds from milliseconds?
- Current timestamps in seconds have 10 digits, while timestamps in milliseconds have 13 digits. This converter auto-detects the unit: any value above 1,000,000,000,000 is treated as milliseconds, and the result notes which unit was assumed.
- Are Unix timestamps affected by timezones?
- No. A Unix timestamp always counts from the UTC epoch, so the same timestamp means the same instant everywhere in the world. Only the human-readable representation changes — this tool shows both UTC and your local time.
- What is the year 2038 problem?
- Systems that store Unix timestamps as signed 32-bit integers overflow on January 19, 2038, at 03:14:07 UTC. Modern systems use 64-bit integers, which will not overflow for hundreds of billions of years, so this converter handles dates far beyond 2038.
- Does the conversion happen in my browser?
- Yes. Everything runs client-side in your browser using JavaScript's built-in Date object — nothing you type is sent to a server.