Unix Timestamp Converter | DevNexus

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How It Works

Input Timestamp

Paste your epoch time into the timestamp field, or pick a date from the calendar input.

Auto-detection

The tool automatically detects if your timestamp is in seconds or milliseconds, saving you time.

View Results

Instantly see the time converted into your Local TimeZone, UTC, ISO 8601, and Relative time.

Copy Values

Click the copy icon next to any of the results to quickly save them to your clipboard.

Convert Unix Timestamps and Dates in Your Browser

A Unix timestamp (epoch time) is the number of seconds since January 1, 1970 UTC. Our free Unix Timestamp Converter runs in your browser: paste a timestamp to get a human-readable date, or pick a date to get the epoch value. Supports both seconds and milliseconds; all conversion is client-side.

Seconds vs milliseconds

Many APIs and databases use seconds; JavaScript and some APIs use milliseconds (13 digits). Our tool auto-detects the format and shows the result in local time, UTC, and ISO 8601. You can also convert from date to timestamp in either unit.

Use cases

Handy for debugging API responses, log files, JWT exp/iat claims, and any place timestamps are stored as numbers. No data is sent to a server—everything runs locally in your browser.

Frequently Asked Questions

What is a Unix Timestamp?

A Unix timestamp (or epoch time) is a way to track time as a running total of seconds. This count starts at the Unix Epoch on January 1st, 1970 at UTC. Therefore, the unix time stamp is merely the number of seconds between a particular date and the Unix Epoch. It's widely used in programming and operating systems.

What is the difference between seconds and milliseconds?

Standard Unix timestamps are in seconds. However, modern languages like JavaScript (and some databases) native date objects operate in milliseconds. A timestamp in milliseconds will simply have 3 extra digits at the end compared to one in seconds. Our converter automatically detects which scale you're using.

What happens in the year 2038?

The Year 2038 problem (or Y2K38) is an upcoming time formatting issue for computer systems with time values stored in a signed 32-bit integer. At 03:14:07 UTC on 19 January 2038, the value will overflow, meaning the system cannot correctly represent times after this. Systems using 64-bit integers (which is common now) will not face this issue for roughly 292 billion years.

Is any of my date data sent to a server?

No! All conversions are performed entirely inside your browser using JavaScript. Nothing you enter into this tool leaves your device.

How It Works

Input Timestamp

Paste your epoch time into the timestamp field, or pick a date from the calendar input.

Auto-detection

The tool automatically detects if your timestamp is in seconds or milliseconds, saving you time.

View Results

Instantly see the time converted into your Local TimeZone, UTC, ISO 8601, and Relative time.

Copy Values

Click the copy icon next to any of the results to quickly save them to your clipboard.

Convert Unix Timestamps and Dates in Your Browser

Seconds vs milliseconds

Use cases

Handy for debugging API responses, log files, JWT exp/iat claims, and any place timestamps are stored as numbers. No data is sent to a server—everything runs locally in your browser.

Frequently Asked Questions

What is a Unix Timestamp?

What is the difference between seconds and milliseconds?

What happens in the year 2038?

Is any of my date data sent to a server?

No! All conversions are performed entirely inside your browser using JavaScript. Nothing you enter into this tool leaves your device.