Epoch Converter

An epoch converter (also called Unix timestamp converter) is a free online tool that converts Unix timestamps—seconds or milliseconds since January 1, 1970 UTC—into human-readable dates and times, and vice versa. Developers, DevOps engineers, and data analysts use epoch conversion daily when working with APIs, logs, databases, and scheduling systems that store time as numbers. Our epoch converter is fast, secure, and runs entirely in your browser. You can paste a timestamp or a date, switch between seconds and milliseconds, and see results in your local time zone or in UTC. There is no sign-up, no API key, and no data is sent to any server. Whether you need to decode a single timestamp or batch-convert several, this tool helps you get human-readable dates instantly. It also supports ISO 8601 output for use in APIs and documentation. Use it to debug log timestamps, verify API responses, convert database values, or teach others how Unix time works. The tool is part of our Date & Time category, alongside timezone converter, ISO 8601 generator, date difference calculator, age calculator, and week number calculator.

How it works

1. 1

   Enter a timestamp or date

   Paste a Unix timestamp (seconds or milliseconds) or pick a date and time. You can type in the input field or use the date picker.

2. 2

   Choose format and time zone

   Select whether your timestamp is in seconds or milliseconds, and choose your output time zone (e.g. local or UTC).

3. 3

   Get human-readable result

   The tool converts instantly and shows the result. Copy the date string or ISO 8601 format for your code or docs.

Use cases

• Converting API or log timestamps to readable dates
• Debugging time-based logic in code
• Converting database Unix timestamps for reports
• Teaching or explaining Unix time
• Generating timestamps for testing

Why use this tool

• Free and no sign-up—use immediately.
• Runs in the browser; your data never leaves your device.
• Supports both seconds and milliseconds.
• Output in local time or UTC, with ISO 8601 option.
• Part of a full set of date and time tools.

FAQ

• What is an epoch converter?

  An epoch converter turns Unix timestamps (seconds or milliseconds since Jan 1, 1970 UTC) into human-readable dates and times, and can convert dates back to timestamps.

• Is this epoch converter free?

  Yes. This is a free online tool. No sign-up or API key is required. All conversion happens in your browser.

• Does it support milliseconds?

  Yes. You can enter or convert timestamps in either seconds or milliseconds.

• Can I use it for API or log timestamps?

  Yes. Paste a timestamp from logs or an API response to get the corresponding date and time in your chosen time zone.

• Where is my data sent?

  Nowhere. The tool runs entirely in your browser. We do not store or transmit your input or output.

Related tools

You might also find these tools useful:

• Timezone Converter
• ISO 8601 Generator
• Date Difference Calculator