What is a Unix epoch timestamp?

A Unix epoch timestamp is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC. It's widely used in programming, databases, and APIs to represent points in time as a single number.

What's the difference between seconds and milliseconds?

Unix timestamps in seconds are 10 digits (e.g., 1709913600), while milliseconds are 13 digits (e.g., 1709913600000). JavaScript's Date.now() returns milliseconds; most Unix systems use seconds. This tool auto-detects which you're using.

Yes! All conversions happen entirely in your browser using JavaScript. No data is sent to any server, and nothing is stored or logged.

What formats are supported?

The tool supports Unix timestamps (seconds & milliseconds), ISO 8601 (e.g., 2024-03-08T12:00:00Z), RFC 2822 (e.g., Fri, 08 Mar 2024 12:00:00 +0000), and human-readable local date/time strings.

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Convert Timestamps
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Convert Unix epoch timestamps to human-readable dates and back. Supports seconds, milliseconds, ISO 8601, RFC 2822, and multiple timezones — all in your browser.

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Instant Conversion

Convert between epoch timestamps and dates in real-time as you type.

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Timezone Support

Convert across timezones. See your timestamp in UTC, local time, or any IANA timezone.

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100% Client-Side

All conversions happen in your browser. No data is sent to any server.

Current Unix epoch:0

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Enter a Unix timestamp or date string above to see conversions.

Frequently Asked Questions

Everything you need to know about Epoch Converter.

Convert TimestampsInstantly

Instant Conversion

Timezone Support

100% Client-Side

Frequently Asked Questions

Convert Timestamps
Instantly