Unix Timestamp Converter
Convert Unix epochs to human dates and back.
100% in your browser — nothing uploadedA Unix timestamp counts seconds since January 1, 1970 UTC — it’s how databases, logs, and APIs usually store time. Paste one and see the human-readable date in your local timezone, UTC, and ISO 8601. The tool auto-detects whether your value is in seconds or milliseconds.
It works in reverse too: pick a date and time, and get the epoch in seconds and milliseconds. A live clock shows the current timestamp, ready to copy.
FAQ
Seconds or milliseconds — how do I tell?
10-digit values (like 1753488000) are seconds; 13-digit values are milliseconds. The tool detects this automatically.
What timezone is a Unix timestamp in?
None — it’s always UTC by definition. Timezones only matter when you display it, which is why we show both local and UTC.
What is the year 2038 problem?
Systems storing timestamps as signed 32-bit integers overflow on January 19, 2038. Modern 64-bit systems are unaffected.