BracketUnix Timestamp Converter
Convert Unix timestamps to human-readable dates and back, in any timezone, instantly.
🔒 Runs entirely in your browser — no data is ever sent anywhereWhen you need a Unix timestamp converter
Databases, server logs, and most APIs store and transmit time as a Unix timestamp rather than a readable date, precisely because it's compact and doesn't depend on timezone or locale. That's efficient for machines and unreadable for humans debugging an issue — converting a raw number like 1732300800 into an actual calendar date and time (and back) is a routine step when you're reading through logs, comparing an API's returned created_at field against 'now', or double-checking a JWT's exp claim without doing the math in your head.
Seconds vs milliseconds, and timezones
This tool auto-detects the two common representations by digit count: a 10-digit number is treated as seconds since the Unix epoch (00:00:00 UTC, January 1, 1970), a 13-digit number as milliseconds — matching how most languages and databases actually represent Unix time (JavaScript's own Date.now() returns milliseconds, for example, while most Unix system calls return seconds). The converted result is shown in both your browser's local timezone and UTC side by side, which is usually the fastest way to sanity-check a timestamp when you're comparing something that happened on a server in one timezone against your own clock.
Frequently asked questions
What is a Unix timestamp?
A Unix timestamp (or 'epoch time') is the number of seconds that have elapsed since January 1, 1970 UTC. It's a compact, timezone-independent way to represent a point in time, widely used in databases, logs, and APIs.
Does this tool handle milliseconds or just seconds?
It auto-detects both — a 10-digit number is treated as seconds, a 13-digit number as milliseconds, matching how most languages and databases represent Unix time.
How do I convert to a specific timezone?
The converted date is shown in your browser's local timezone by default, plus UTC for reference — useful for comparing a timestamp across regions without doing manual offset math.
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