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About this Tool
A Unix timestamp (also called Epoch time) is a way of representing a specific moment in time as the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC - known as the Unix Epoch.
It's used universally in programming because it's a single number that's timezone-independent and easy to store, compare, and calculate with. However, Unix timestamps are not human-readable.
That's where a timestamp converter becomes essential - it translates between the machine-friendly Unix integer and the human-friendly date and time formats we actually understand.
You're digging through server logs or debugging an API response and you see a number like 1704067200 - and you have absolutely no idea what date or time that is. Our Timestamp Converter solves that in an instant.
Paste any Unix timestamp and get the equivalent in UTC, your local timezone, ISO 8601 format, relative time (like '3 days ago'), and more.
Or go the other direction - pick a date and time and convert it to a Unix timestamp for use in your database queries, API payloads, or scheduling logic.
How to use
- Enter a Unix timestamp in the input field , the tool auto-detects whether it's seconds or milliseconds
- See the equivalent date and time displayed in UTC, your local timezone, and ISO 8601 format
- View the relative time (e.g., '2 hours ago' or 'in 3 days') for quick context
- Check the week number and day of the year for calendar-related calculations
- Or switch to date-to-timestamp mode: pick a date and time and get the corresponding Unix timestamp
- Copy any output value with one click for use in code, queries, or documentation
Benefits
- Instantly decode Unix timestamps from API responses, logs, and database records
- Shows UTC, local time, ISO 8601, and relative time all at once , no switching
- Converts both ways , timestamp to date and date to timestamp
- Auto-detects seconds vs milliseconds so you don't have to convert manually
- Useful for debugging cron jobs, scheduled tasks, API expiry times, and event logs
- Saves time compared to writing throwaway conversion scripts
FAQs
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) that have passed since January 1, 1970, 00:00:00 UTC, which is called the Unix Epoch. It's the most universal way to store and exchange time data in programming because it's timezone-independent and works as a simple integer.
How do I know if a timestamp is in seconds or milliseconds?
Unix timestamps in seconds are typically 10 digits long (e.g., 1704067200). Millisecond timestamps are 13 digits long (e.g., 1704067200000). Our tool automatically detects which format you've entered and converts accordingly.
What is the difference between UTC and local time?
UTC (Coordinated Universal Time) is the global time standard with no timezone offset. Local time is UTC adjusted for your device's timezone. For example, 1704067200 UTC is '2024-01-01 00:00:00 UTC' , but in UTC+5, that same moment is '2024-01-01 05:00:00'. Our tool shows both.
Why do developers use Unix timestamps instead of formatted dates?
Unix timestamps are timezone-independent, compact, and trivial to compare and calculate with. You can subtract two timestamps to find the difference in seconds, compare them with a simple '<' or '>', and store them as integers in any database. Formatted date strings are messier to work with programmatically.
What is ISO 8601 format and why does it matter?
ISO 8601 is the international standard for date and time representation, formatted as '2024-01-15T10:30:00Z'. The 'Z' indicates UTC. It's used in REST APIs, JSON payloads, XML data, and most modern web standards because it's unambiguous and sortable as a string.
Can I convert a specific date and time back to a Unix timestamp?
Yes. Switch to date-to-timestamp mode, enter the date and time you want (including timezone), and the tool will give you the corresponding Unix timestamp in both seconds and milliseconds. This is useful for constructing API requests, setting up cron jobs, or querying databases by time range.