Unix Timestamp Converter

Convert Unix timestamps to dates and vice versa

Supports seconds, milliseconds, ISO 8601, and more

Current Unix Timestamp
1774653997
Sat, Mar 28, 2026 4:56:37 AM

From Timestamp

From Date/Time

Converted Values

Saturday, March 28, 2026 at 04:56:37 AM

Quick Tips

  • Unix timestamp counts seconds since January 1, 1970 UTC
  • Auto-detects seconds vs milliseconds based on value size
  • JavaScript uses milliseconds internally
  • All processing happens locally in your browser

What is a Unix Timestamp?

A Unix timestamp (also known as Unix time, Epoch time, or POSIX time) is a system for describing a point in time. It represents the number of seconds that have elapsed since January 1, 1970, at 00:00:00 Coordinated Universal Time (UTC), excluding leap seconds. This starting point is called the Unix epoch. Unix timestamps are widely used in computing because they provide a simple, unambiguous way to represent time that's independent of timezones and easy to calculate with.

How to Use the Unix Timestamp Converter

1

Convert timestamp to date

Enter a Unix timestamp in the 'From Timestamp' field. The converter auto-detects whether it's in seconds or milliseconds and shows the corresponding date and time in multiple formats.

2

Convert date to timestamp

Use the date and time inputs in the 'From Date/Time' section to select a specific date and time. Click 'Convert to Timestamp' to get the Unix timestamp value.

3

Use current time

Click the 'Use Now' button to instantly set the converter to the current timestamp. The live display at the top always shows the current Unix timestamp.

4

Copy results

Click on any output format card to copy that value to your clipboard. Available formats include seconds, milliseconds, ISO 8601, UTC string, and local date/time.

Why Use Our Unix Timestamp Converter?

Auto-detection

Automatically detects whether your input is in seconds or milliseconds, eliminating the common source of errors when working with timestamps.

Multiple formats

Get your timestamp in every format you might need: Unix seconds, milliseconds, ISO 8601, UTC string, and local time string - all at a glance.

Live timestamp

See the current Unix timestamp updating in real-time at the top of the page. Perfect for quick reference without any manual conversion.

Complete privacy

All conversions happen locally in your browser using native JavaScript Date functions. Your data is never sent to any server.

Developer-friendly

Copy formats optimized for different use cases - seconds for APIs, milliseconds for JavaScript, ISO 8601 for databases and standards compliance.

Frequently Asked Questions

A Unix timestamp (also called Unix time or Epoch time) is the number of seconds that have elapsed since January 1, 1970, at 00:00:00 UTC, not counting leap seconds. It's a standard way to represent time in computing systems and is widely used in databases, APIs, and programming languages.
Unix timestamps are typically expressed in seconds (10 digits for recent dates). JavaScript and many modern systems use milliseconds (13 digits). Our converter auto-detects the format: values less than 10 billion are treated as seconds, larger values as milliseconds.
Unix timestamps are always in UTC (Coordinated Universal Time). When displayed in your local timezone, the time appears shifted by your timezone offset. For example, a timestamp that represents midnight UTC will show as 7 PM the previous day in EST (UTC-5).
The Year 2038 problem affects systems using 32-bit integers to store Unix timestamps. On January 19, 2038, at 03:14:07 UTC, a 32-bit signed integer will overflow. Most modern systems now use 64-bit integers, which won't overflow for billions of years. Our tool handles timestamps far beyond this limit.

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