Unix Timestamp Converter
Timestamps to dates and back
—Interpreted in your local timezone.
What Is the Unix Timestamp Converter?
The Unix Timestamp Converter translates Unix epoch timestamps into human-readable dates and back again, in both seconds and milliseconds, across your local time and UTC. Enter a timestamp or a date to convert instantly — an everyday utility for developers working with logs, APIs, databases, and any system that stores time as a number.
Key Features
What Is a Unix Timestamp?
A Unix timestamp is the number of seconds (or milliseconds) elapsed since January 1, 1970 UTC, known as the epoch. It is a compact, timezone-independent way to store a moment in time, which is why databases, logs, and APIs use it everywhere. Converting it to a readable date is a constant need for developers.
Seconds vs Milliseconds
Some systems store timestamps in seconds (10 digits) and others in milliseconds (13 digits) — mixing them up is a common bug that produces dates decades off. This converter handles both and shows the result in local time and UTC, so you can read any timestamp correctly regardless of its precision or your timezone.
Common Use Cases
- Reading Unix timestamps from logs and databases
- Converting a date into a timestamp for an API
- Debugging timezone and precision issues
- Checking the current epoch time
Frequently Asked Questions
What is the Unix epoch?
The Unix epoch is midnight UTC on January 1, 1970. A Unix timestamp counts the seconds (or milliseconds) since that moment, giving a single number that represents any point in time.
How do I tell seconds from milliseconds?
A seconds timestamp is about 10 digits today, while a milliseconds timestamp is about 13 digits. If a converted date lands far in the future or past, you likely used the wrong unit.
Does it show UTC and local time?
Yes. The converter displays the result in both UTC and your browser’s local timezone, so you can read the time correctly for either context.
Can I convert a date back to a timestamp?
Yes, conversion works in both directions. Enter a human-readable date and the tool returns the corresponding Unix timestamp in seconds and milliseconds.
Is the converter free?
Yes, it is completely free, requires no login, and runs entirely in your browser.
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