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Timestamp Converter

Convert Unix timestamps to human dates and back — with timezones, milliseconds and batch mode.

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Current Unix Timestamp (seconds) — updates live

Timestamp to Date

Date to Timestamp

Batch Convert (one per line)

Paste timestamps OR dates, one per line. The tool auto-detects which is which and converts both ways.

Common Reference Points

EventUnix TimestampUTC Date

What Is a Unix Timestamp?

A Unix timestamp (also called Epoch time) counts the number of seconds that have elapsed since 00:00:00 UTC on January 1, 1970 — ignoring leap seconds. It's the standard way computers store and compare points in time internally, since it's just a single number rather than a formatted string.

Many systems use milliseconds instead of seconds (multiply by 1000), which is common in JavaScript (Date.now()) and many JSON APIs. This tool supports both.

Free Unix Timestamp Converter

The Timestamp Converter is a fast, free, and easy-to-use online tool that helps you convert Unix timestamps into human-readable dates and convert dates back into Unix timestamps instantly. Whether you're working with APIs, databases, server logs, or application debugging, this tool provides accurate timestamp conversion in just a few clicks.

It supports Unix timestamps in both seconds and milliseconds, automatically detects your local timezone, and provides multiple output formats including UTC time, ISO 8601, and localized date/time. Developers can also convert multiple timestamps simultaneously using the built-in Batch Converter.


Current Unix Timestamp

The live Unix Timestamp section continuously displays the current Unix time in real-time. This is useful when generating timestamps for APIs, authentication tokens, logging systems, scheduling applications, or testing software that relies on Unix Epoch values.


Timestamp to Date Converter

Simply enter any Unix timestamp to instantly convert it into a readable date and time. The converter automatically detects whether the timestamp is in seconds or milliseconds and provides accurate results without requiring any manual calculations.

The conversion results include:

  • Local Date & Time
  • UTC Date & Time
  • ISO 8601 Format
  • Selected Timezone Output
  • Copy-to-Clipboard Support

Date to Timestamp Converter

Need to generate a Unix timestamp from a specific date? Simply choose a date, select the time, and pick the desired timezone. The tool instantly generates both Unix timestamps in seconds and milliseconds.

Additional output formats include:

  • Unix Timestamp (Seconds)
  • Unix Timestamp (Milliseconds)
  • UTC Date
  • ISO 8601 Timestamp
  • Localized Time
  • Relative Time Information

Batch Timestamp Converter

Convert multiple timestamps or dates simultaneously using the Batch Converter. Paste one timestamp or date per line, and the tool automatically detects the input format before converting each entry. This feature is especially useful for developers working with log files, analytics reports, exported databases, and API responses.


Quick Actions

Save time using built-in Quick Actions. Instantly populate the converter with commonly used timestamps, including:

  • Current Unix Timestamp
  • Start of Today (UTC)
  • Start of Current Month
  • Start of Current Year

These shortcuts eliminate manual date selection and speed up common development tasks.


Automatic Timezone Detection

The converter automatically detects your browser's local timezone and displays the corresponding UTC offset. You can also select a different timezone to compare timestamps across regions, making it useful for global applications and distributed systems.


Common Reference Timestamps

The built-in reference table provides several well-known Unix timestamps, including the Unix Epoch, Y2K, the beginning of recent years, and important timestamp limits. These references are helpful for learning, testing, and verifying timestamp calculations.


Features

  • Live Unix Timestamp Generator
  • Timestamp to Date Conversion
  • Date to Unix Timestamp Conversion
  • Supports Seconds & Milliseconds
  • Batch Timestamp Conversion
  • Automatic Timezone Detection
  • UTC & Local Time Support
  • ISO 8601 Formatting
  • Relative Time Display
  • Copy Results with One Click
  • Responsive Mobile-Friendly Interface
  • Fast Client-Side Processing
  • No Registration Required
  • Free Forever

Who Can Use This Tool?

  • Software Developers
  • Backend Engineers
  • Frontend Developers
  • API Developers
  • Database Administrators
  • DevOps Engineers
  • System Administrators
  • QA Testers
  • Cloud Engineers
  • Students Learning Programming

Common Use Cases

  • Reading API Response Timestamps
  • Converting Database Records
  • Debugging Server Logs
  • Generating Unix Epoch Values
  • Testing Applications
  • Working with JSON APIs
  • Converting JavaScript Dates
  • Scheduling Events
  • Comparing Timezones
  • Analyzing Log Files

Why Use This Timestamp Converter?

Unlike basic timestamp converters, this tool combines live Unix time, bidirectional conversion, batch processing, timezone support, ISO formatting, quick shortcuts, and automatic timezone detection in a single interface. Everything runs instantly in your browser, making it one of the fastest and most convenient timestamp conversion tools available for developers and technical users.

Frequently Asked Questions

What happens after the year 2038?
Systems that store Unix time as a signed 32-bit integer will overflow on January 19, 2038 (the "Year 2038 problem"). Most modern systems use 64-bit integers and are unaffected.
Why is my timestamp 1000x larger than expected?
You likely have a millisecond timestamp instead of seconds. Toggle the "Milliseconds" unit option above to convert it correctly.
Does this tool work offline?
Yes — all conversions happen locally in your browser using JavaScript's built-in Date object. No data is sent anywhere.
Can I convert negative timestamps?
Yes. Negative timestamps represent dates before January 1, 1970, and are fully supported.