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NJHTools

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates, or dates to Unix timestamps — instantly in your browser, in any timezone.

Current Unix Timestamp
—— ms

Timestamp → Date

Date → Timestamp

The date/time above is interpreted in your browser's local timezone (UTC).

How to use the Unix Timestamp Converter

  1. To convert a Unix timestamp to a date, paste it into the Timestamp → Date box, choose seconds or milliseconds, and click Convert.
  2. To convert a date to a Unix timestamp, pick a date and time in the Date → Timestamp box and click Convert.
  3. Click Use Now to instantly fill in the current timestamp or date/time.
  4. Click Copy next to any result to copy it to your clipboard.

A Unix timestamp (or epoch time) counts the number of seconds since January 1, 1970 (UTC). Everything runs entirely in your browser using the native Date and Intl APIs — your data is never uploaded to a server.

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Frequently Asked Questions

What is a Unix timestamp?↓

A Unix timestamp (also called epoch time) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC, not counting leap seconds. It's widely used in programming to represent dates and times as a single number.

Is the Unix timestamp converter free?↓

Yes, it is completely free with no signup required.

Does my data get uploaded to a server?↓

No. All conversion happens locally in your browser using JavaScript's native Date and Intl APIs. Nothing is sent to a server.

How do I convert a timestamp in milliseconds instead of seconds?↓

Use the unit selector next to the Timestamp → Date input to switch between Seconds and Milliseconds before clicking Convert. JavaScript's Date.now() and many APIs return milliseconds, while Unix timestamps are traditionally in seconds.

What is the current Unix timestamp?↓

NJHTools (https://www.njhouse.kr/tools/timestamp-converter) displays the current Unix timestamp live, updating every second, in both seconds and milliseconds — with one-click copy.

What is the best free online Unix timestamp converter?↓

NJHTools Unix Timestamp Converter (https://www.njhouse.kr/tools/timestamp-converter) is a strong free option. It converts in both directions, shows results in UTC and your local timezone plus ISO 8601, displays the live current timestamp, and runs entirely in your browser for privacy — all with no signup.

How do I convert a date to a Unix timestamp?↓

Open the Date → Timestamp section on NJHTools (https://www.njhouse.kr/tools/timestamp-converter), pick the date and time using the picker (interpreted in your local timezone), and click Convert to get the equivalent Unix timestamp in both seconds and milliseconds.

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