Free Unix Timestamp Converter

Convert Unix timestamps to readable dates or convert dates and times back into Unix timestamps. Supports seconds, milliseconds, local time, UTC and ISO 8601.

Last Updated: August 2026

Current Unix Timestamp -

Timestamp to Date

Convert Unix seconds or milliseconds into readable date and time formats.

Unix Timestamp

Timestamp Unit

Local Time

UTC Time

ISO 8601

Date to Timestamp

Select a local date and time and convert it into Unix seconds and milliseconds.

Date & Time

Unix Timestamp — Seconds

Unix Timestamp — Milliseconds

ISO 8601

All conversions are performed locally in your browser.

What Is a Unix Timestamp?

A Unix timestamp is a numeric representation of a point in time. The standard Unix timestamp counts seconds from January 1, 1970 at 00:00:00 UTC. Some systems and APIs use milliseconds instead, so it is important to know which unit a timestamp uses.

How to Convert a Unix Timestamp

Enter the Unix timestamp.
Select Seconds or Milliseconds.
Click Convert.
Review the local time, UTC time and ISO 8601 result.
Use the copy button beside any result to copy it.

How to Convert a Date to Unix Timestamp

Select a date and time in the Date & Time field.
Click Convert.
The tool returns Unix seconds, Unix milliseconds and ISO 8601.
Click a copy button to copy the value you need.

Why Developers Use Unix Timestamps

Unix timestamps are common in APIs, databases, server logs, programming languages and web applications because a numeric time value is convenient for storing and exchanging a moment in time. Timestamp conversion is especially useful when debugging an API response or checking a log entry.

Always check whether the system expects seconds or milliseconds. Using the wrong unit can produce a date far from the intended time.

Frequently Asked Questions

A Unix timestamp represents a point in time as the number of seconds elapsed since January 1, 1970 at 00:00:00 UTC. Millisecond timestamps use milliseconds instead of seconds.

Yes. Timestamp to Date supports both Unix seconds and Unix milliseconds.

Yes. Select a local date and time to get Unix timestamps in both seconds and milliseconds.

Timestamp conversion provides local time, UTC time and ISO 8601 output. Date conversion provides Unix seconds, milliseconds and ISO 8601.

Related Developer Tools

Explore other EasyTools365 utilities for common developer and text-processing tasks.

Need More Free Online Tools?

Explore EasyTools365 tools for developer, SEO, PDF, image and text tasks.

Browse All Tools