Unix Timestamp Converter
Convert Unix timestamps to readable dates and times instantly. Use this free online epoch converter to decode timestamps for APIs, logs, databases, and applications.
Read as seconds since 1970-01-01 00:00:00 UTC.
Relative to now: 1089 days ago
What is Unix Timestamp Converter?
A Unix Timestamp Converter transforms Unix epoch timestamps into human-readable dates and times, or converts dates back into timestamps. Unix timestamps are widely used in APIs, databases, application logs, and software systems to represent time consistently. Use this free online tool to quickly decode timestamps, troubleshoot time-related issues, and verify date values during development.
Why use this tool?
- Translate machine-oriented timestamps into human-readable dates.
- Check whether an API is using seconds or milliseconds.
- Compare event times across systems using a consistent UTC-based representation.
How to use Unix Timestamp Converter
- Step 1. Enter a Unix timestamp in seconds or milliseconds on the left to see its UTC, ISO 8601 and local date.
- Step 2. Or pick a date and time on the right to get its timestamp in seconds and milliseconds.
- Step 3. Check the time zone and unit expected by the system you are working with before using the value.
Common use cases
Convert a Unix timestamp in JavaScript
JavaScript Date expects milliseconds, while Unix timestamps are commonly expressed in seconds.
const unixSeconds = 1735689600;
const date = new Date(unixSeconds * 1000);
console.log(date.toISOString()); // 2025-01-01T00:00:00.000ZTools to use next
Continue the task with related utilities for the next step in your workflow.
Important notes
- Timestamps with 13 or more digits are read as milliseconds, and shorter ones as seconds.
- The current Unix time shown above the converter updates every second.
- Unix timestamps are commonly represented in seconds or milliseconds; confusing the two produces a dramatically different date.
- Always confirm the timezone and unit expected by the system you are integrating with.
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Unix Timestamp Converter FAQ
Is epoch time the same as Unix time?
Yes. Epoch time and Unix time both count the time since the Unix epoch, 1970-01-01 00:00:00 UTC.
How do I get the current Unix timestamp?
It is shown at the top of the converter. In JavaScript, Math.floor(Date.now() / 1000) gives it in seconds.
What is the Unix epoch?
It is the reference point used by Unix time, traditionally 1970-01-01 00:00:00 UTC.
Why is my timestamp off by a factor of 1,000?
The value may be milliseconds while the converter or API expects seconds, or vice versa.