Timestamp Converter
Convert between Unix timestamps and human-readable date/time formats. Supports both seconds and milliseconds.
Timestamp Conversion
What is a Timestamp Converter?
A Unix timestamp is a number representing the time elapsed since January 1, 1970, 00:00:00 UTC in seconds or milliseconds. It is widely used as a standard method for storing date/time in databases, APIs, log files, and more. This tool allows you to easily convert between timestamps and human-readable date/time formats.
Key Features
- Bi-directional Conversion – Timestamp to Date/Time and Date/Time to Timestamp
- Seconds/Milliseconds Support – Supports both 10-digit (seconds) and 13-digit (milliseconds) timestamps
- Current Time – View and copy current timestamp in real-time
- Multiple Output Formats – Display local time, UTC, and ISO 8601 formats simultaneously
- Quick Select – Fast date navigation with 1 hour/1 day before/after buttons
- Day of Week – Automatic calculation of the day of the week
How to Use
- Select Unit – Choose either Seconds or Milliseconds tab.
- Enter Timestamp – Type a timestamp number in the left input field for automatic conversion to date/time.
- Enter Date/Time – Select date and time on the right side to convert to timestamp.
- View Results – Check the conversion result along with UTC and ISO 8601 formats.
- Quick Select – Use the buttons at the bottom to quickly get timestamps for specific time points.
Seconds vs Milliseconds Timestamp
Seconds (Unix Timestamp) is a 10-digit number used in traditional Unix systems. Example: 1704067200 (January 1, 2024, 00:00:00 UTC)
Milliseconds is a 13-digit number commonly used in modern programming languages like JavaScript and Java. Example: 1704067200000
While the unit can be roughly guessed from the number of digits, select the correct unit in the tabs for accurate conversion.
Who Finds This Useful
- Backend Developers – Verify and debug timestamps in API responses
- Frontend Developers – Work with JavaScript Date objects
- Database Administrators – Interpret stored timestamp data
- System Administrators – Analyze timestamps in log files
- Data Analysts – Process time-series data
Privacy Protection
This tool runs 100% in your browser. No timestamps or date information you enter are sent to any server. All data is cleared when you close the browser.
When to use it
- When you need a quick estimate before a detailed review
- When you want to compare multiple input scenarios
- When you need to reduce repetitive manual calculations
- When you need reference values for work or study
- When you want to validate numbers before sharing them
Details
Results in Timestamp Conversion are generated from your input values and selected options.
For final decisions, cross-check with official guidelines or expert review.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp (Epoch Time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC (Coordinated Universal Time). It’s a standard way to represent a point in time that is the same worldwide, regardless of time zones.
Why is January 1, 1970 the base date?
January 1, 1970 was chosen for convenience during the development of the Unix operating system. This date is called the “Unix Epoch” and has become widely used as a reference point for time calculations in computer systems.
What is the Year 2038 problem?
On 32-bit systems, the maximum value for storing Unix timestamps is reached on January 19, 2038 at 03:14:07 UTC. After this, an overflow can occur. Most modern systems now use 64-bit timestamps to avoid this issue.
Does a timestamp include time zone information?
Unix timestamps are always based on UTC. They do not include time zone information. To display time in a specific time zone, the appropriate offset must be applied. This tool automatically applies your browser’s local time zone for display.
What should I use these results for?
Use them for quick checks and comparisons. For critical decisions, verify with official sources.