How do I know if my timestamp is in seconds or milliseconds?

Unix Timestamp Converter

Runs in Your Browser

Convert Unix epoch timestamps (seconds and milliseconds) into readable UTC and local date formats. Includes a live ticking current timestamp and date-to-epoch converter.

Browser-based: this tool works on your device and does not send your input to an Alona Tool server. See the Privacy Policy for details.

Fast Processing

Loading Unix Timestamp Converter… This tool is an interactive page and needs JavaScript enabled in your browser.

Example Usage & Test Cases

Epoch 1700000000

Input Scenario:

1700000000

Generated Result:

Wednesday, November 15, 2023 10:13:20 PM (UTC)

How It Works

Calculates milliseconds since the Unix epoch (January 1, 1970 00:00:00 UTC) using the browser's high-precision Date API.

Frequently Asked Questions

10-digit timestamps are in seconds; 13-digit timestamps are in milliseconds. Our tool auto-detects both!

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Live Unix Epoch Timestamp Converter

Convert between human-readable calendar dates and computer timestamps in seconds or milliseconds.

Key Highlights:

Seconds and milliseconds auto-detection
Live current epoch clock
UTC and Local timezone breakdown
Relative time display