How do I convert a Unix timestamp to a human-readable date?

Simply enter the Unix timestamp (in seconds) into the Timestamp → Date section above and click Convert. The tool will display the equivalent date and time in UTC, your local timezone, and ISO 8601 format. You can also use programming functions: in JavaScript use new Date(timestamp * 1000), in Python use datetime.fromtimestamp(timestamp), and in PHP use date('Y-m-d H:i:s', timestamp).

What is the difference between seconds and milliseconds in Unix time?

Standard Unix timestamps count elapsed seconds since the Epoch. However, many programming environments — especially JavaScript — use milliseconds (ms), which are 1000× larger. For example, the timestamp 1700000000 in seconds equals 1700000000000 in milliseconds. Always check which unit your system expects, as mixing them up is a common source of bugs.

What is the Year 2038 problem?

The Year 2038 problem (Y2K38) occurs because older 32-bit systems store Unix timestamps as a signed 32-bit integer, which can hold a maximum value of 2,147,483,647 — corresponding to January 19, 2038, 03:14:07 UTC. After this point, the counter overflows and rolls back to a negative number, potentially causing system failures. Modern 64-bit systems are not affected, as they can represent timestamps far into the future.

Why do APIs and databases use Unix timestamps?

Unix timestamps are the preferred format in APIs and databases because they are timezone-neutral (always UTC-based), compact (a single integer), easy to sort and compare, language-agnostic, and unambiguous across locales. Unlike human-readable formats such as '03/04/2025' (which differs between US and EU conventions), a Unix timestamp always represents exactly the same moment in time regardless of server or client location.

Unix Timestamp Converter — Epoch to Date Online

2on / / Tools / Dev Tools / Unix Timestamp Converter

Unix Timestamp Converter

Current Unix Timestamp

—

Timestamp → Date

Unix Timestamp (seconds)

Date → Timestamp

Select Date & Time

Frequently Asked Questions

A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC — known as the Unix Epoch. It provides a universal, timezone-independent way to represent points in time, which is why it is widely used in programming, databases, APIs, and log files.

Most Popular Dev Tools

All Time

MD5 Hash Generator - Online MD5 Converter

1859 hits

Base64 Encoder & Decoder — Encode and Decode Online

1649 hits

Character Counter - Character Count Calculator

1344 hits

Keyword Density Checker - Analyze Keyword Frequency Online

1318 hits

Lorem Ipsum Generator — Instant Placeholder Text

1312 hits

New

SHA1 Generator Generate SHA-1 hashes instantly from any text or string. Free online tool with uppercase, lowercase output and one-click copy.

View Page

Popular Today

JWT Decoder Decode and inspect JWT tokens instantly. View header, payload, and signature in a readable format without any server calls.

View Page

Related Dev Tools

MD5 Hash Generator Generate MD5 hashes instantly from text or files. Online MD5 converter tool for developers, encryption testing, and checksum generation.

Base64 Encoder & Decoder Encode or decode Base64 strings instantly. Online Base64 encoder and decoder for text and files. No data is sent to any server.

Word Counter Free online word counter tool. Count words, characters, sentences, paragraphs, reading time and more instantly.

Character Counter Online character counter. Count characters with and without spaces, words, and lines. Check SEO limits for meta descriptions, titles, and social media posts.

Keyword Density Checker Online keyword density checker. Analyze keyword frequency and percentage in any text or URL. Optimize your content for SEO with accurate keyword density analysis.

Other Tools You May Like

No related content found