Unix Timestamp Converter
Convert epoch time to readable dates and back
| UTC | |
| Your time zone | |
| Relative |
| Unix timestamp |
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| Milliseconds |
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| UTC | |
| Your time zone | |
| Relative |
About Unix Timestamps
Free Online Unix Timestamp Converter
EpochParser is a free online tool that converts Unix timestamps (epoch time) to
human-readable dates and back. Whether you need to decode a value from an API response, debug a database
created_at column, or convert a date into epoch format for JavaScript, this converter handles it
instantly in your browser — no signup, no uploads, and no data sent to a server.
Search terms like epoch to date, date to epoch, POSIX time converter, and Unix time calculator all refer to the same task: turning a number of seconds since the Unix Epoch into a readable calendar date, or the reverse.
How to Use This Converter
- Timestamp → Date: Paste a 10-digit (seconds) or 13-digit (milliseconds) Unix timestamp, then click Convert. Results show UTC, your local time zone, and relative time.
- Date → Timestamp: Enter year, month, day, hour, minute, and second, then click Convert. You get the Unix timestamp in seconds and milliseconds.
- Live clock: The panel on the right shows the current Unix timestamp updating every second — useful when you need “right now” in epoch format.
What Is a Unix Timestamp?
A Unix timestamp (also called Epoch time or POSIX time) is a number that represents a specific moment in time. Instead of storing dates as text like “June 27, 2026”, computers often store a single integer counting the seconds since January 1, 1970 at 00:00:00 UTC — known as the Unix Epoch.
This format is used everywhere: operating systems, databases, APIs, logs, and mobile apps. Linux, macOS, Android, MySQL, PostgreSQL, JavaScript, PHP, Python, and Node.js all rely on Unix timestamps internally.
Why Developers Use It
- Simple: One integer, easy to store and compare
- Timezone-neutral: Represents an exact instant worldwide
- Efficient: Smaller than long date strings
- Fast math: Sorting and time differences are straightforward
- Universal: Supported by virtually every language
Seconds vs Milliseconds
Unix time usually comes in two formats:
- 10 digits — seconds (classic Unix time)
- 13 digits — milliseconds (common in JavaScript)
Seconds: 1733953500 Milliseconds: 1733953500000
This parser detects both formats automatically.
Common Epoch Timestamp Examples
Quick reference for well-known moments in Unix time (seconds, UTC):
| Event | Unix Timestamp | Date (UTC) |
|---|---|---|
| Unix Epoch start | 0 |
1970-01-01 00:00:00 |
| Y2K | 946684800 |
2000-01-01 00:00:00 |
| Example API value | 1733953500 |
2024-12-11 21:45:00 |
| Year 2038 (32-bit limit) | 2147483647 |
2038-01-19 03:14:07 |
How Conversion Works
Converting a timestamp to a human date means turning seconds since the Epoch into something readable, like
2025-01-01 14:30:00 UTC. Converting the other way counts how many seconds have passed since
January 1, 1970 for the date and time you enter. All conversions on this page run in your browser — nothing is sent to a server.
Unix timestamps are always stored in UTC. When you see “Your time zone”, the converter applies your browser’s local offset so you can match log files, cron jobs, or API docs that use local time.
Frequently Asked Questions
How do I convert epoch time to a human-readable date?
Paste the number into the “Timestamp → Human Date” field and click Convert. EpochParser shows UTC, your local time zone, and relative time (e.g. “2 hours ago”).
How do I convert a date to a Unix timestamp?
Use the “Human Date → Timestamp” section. Enter the date and time components and click Convert to get seconds and milliseconds since the Unix Epoch.
Why does Unix time start in 1970?
It was chosen during early Unix development and worked well with 32-bit systems of that era. That moment is called the Unix Epoch.
Does Unix time handle leap seconds?
No — it ignores leap seconds, which rarely affects everyday applications like APIs, logs, or databases.
What is the Year 2038 problem?
Older 32-bit systems could overflow when storing seconds after January 19, 2038. Modern 64-bit systems are not affected.
Is EpochParser free to use?
Yes. The converter is completely free, runs in your browser, and does not require an account.