Timestamp Converter

Timestamp → Date

Unix Timestamp (seconds)

UTC

Local

ISO 8601

Date → Timestamp

Select Date and Time

Unix Timestamp (seconds)

Timestamp in Milliseconds

📦 Timestamp Converter Source Code $4.99

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What is a Timestamp Converter?

A timestamp converter switches between Unix timestamps (the number of seconds since January 1, 1970) and human‑readable dates. This tool is essential for developers working with APIs, databases, or logs that store time as numeric values. It instantly converts in both directions, showing UTC, local time, and ISO 8601 format, and runs entirely in your browser so your data stays private.

How to Use

Timestamp → Date: Enter a Unix timestamp in seconds and click the arrow, or press "Now" to use the current time. The UTC, local, and ISO 8601 representations appear immediately.
Date → Timestamp: Pick a date and time using the native picker, or click "Now" to fill it with the current moment. Click the arrow to see the corresponding Unix timestamp in seconds and milliseconds.
Copy the results with the buttons above. All conversions happen locally, and no data ever leaves your device.

Frequently Asked Questions

Is my data safe? Does anything get uploaded?

Absolutely. The tool runs completely offline in your browser. No timestamps, dates, or any other information is ever transmitted, stored, or logged. You can use it for sensitive data without any risk.

Does it handle time zones?

Yes. The converter uses your browser's timezone setting. The "Local" output reflects your system's local time, while UTC and ISO 8601 are timezone‑neutral. When you pick a date with the datetime‑local input, it is interpreted as your local time.

Does this tool work offline?

Yes, completely. It has no external dependencies or server calls. Save the HTML file, and you'll have a fully functional timestamp converter available anytime, even without an internet connection.

Disclaimer: This tool performs all operations locally in your browser. No data is stored, transmitted, or logged.