🕐 Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and back. See the current timestamp in real time. Convert between seconds and milliseconds. Entirely browser-based.

Developer✓ 100% Free✓ Real-Time✓ No Signup

Unix Timestamp → Human Date

Human Date → Unix Timestamp

Current Time

Unix Timestamp (seconds)
Unix Timestamp (milliseconds)
UTC
Local Time
Common Timestamps

How to Use

1
Enter a Unix timestamp

Paste any Unix timestamp (seconds or milliseconds) into the top input and click Convert.

2
Convert a date to timestamp

Use the date picker in the lower section to select any date and time — the Unix timestamp is generated instantly.

3
See the current timestamp

The right panel shows the live current Unix timestamp, UTC, and your local time, updating every second.

Frequently Asked Questions

What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC — known as the Unix Epoch. It is the most common way to store and compare dates in software because it is timezone-independent and easy to sort and calculate with.
What is the difference between seconds and milliseconds?
Unix timestamps are traditionally in seconds. JavaScript's Date.now() returns milliseconds. A 10-digit number is seconds (e.g. 1720000000). A 13-digit number is milliseconds (e.g. 1720000000000). This tool auto-detects which format you have entered.
What is the maximum Unix timestamp?
The maximum for 32-bit signed integers is 2,147,483,647 — January 19, 2038. This is the "Year 2038 problem". Modern systems use 64-bit timestamps which extend to the year 292 billion.
What is UTC?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. Unix timestamps are always in UTC. Your local time is UTC plus or minus your timezone offset.
Is this tool accurate?
Yes. This tool uses JavaScript's built-in Date object, which is accurate to millisecond precision and sourced from your device's system clock.

About This Tool

The Unix timestamp (also called Unix time, POSIX time, or epoch time) was introduced with the Unix operating system in the early 1970s and has become the universal standard for representing moments in time in computing. It is timezone-independent — 1720000000 represents the same moment in time everywhere in the world, regardless of the reader's timezone. This tool uses JavaScript's built-in Date object for all conversions, which is accurate to millisecond precision. The live timestamp display updates every second using setInterval.

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