Timestamp Converter

Convert between Unix timestamps and human-readable date/time formats. Supports both seconds and milliseconds.

Last updated: 2026/03/13

Timestamp Conversion

Convert Unix timestamps and date/time instantly, then check seconds, milliseconds, UTC, and ISO formats in one place.

Live

Current Time and Timestamp

Copy the current time in seconds or milliseconds right away.

Current Timestamp

–

Unit Seconds (10 digits)

10 digits usually means seconds, while 13 digits usually means milliseconds.

Input

Switch between numbers and date/time

Enter a number or date/time and the opposite format updates right away.

Enter a number or date/time to convert instantly.

Timestamp Input

10 digits usually means seconds, and 13 digits usually means milliseconds.

Two-way conversion

Date / Time Input

Calculated in your local timezone.

Quick Select

Result

See the result at a glance

See the main time plus seconds, milliseconds, UTC, and ISO formats together.

Ready to calculate from the current time.

Enter a number or date/time to see the result.

Seconds, milliseconds, UTC, and ISO formats appear together.

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 check
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 confirmation.

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.

Anonymous Opinion 1

No comments yet. Leave the first opinion.