Timestamp Converter Online - Free Unix Time to Date Converter

Timestamp Converter Tool

Convert Unix timestamp to readable date and convert date/time back to Unix timestamp in seconds and milliseconds.

🔒 Calculated in your browser

Timestamp Inputs

Conversion Mode Choose conversion direction.

Date and Time Used when converting date to timestamp.

Unix Timestamp Used when converting timestamp to date.

Timestamp Unit Choose seconds or milliseconds.

Main Output Choose main result format.

Label / Purpose Optional. Used in report.

Important Unix timestamp is based on UTC time. Local date/time depends on the user's browser timezone.

Status will appear here.

Main Result -

0 Unix Seconds

0 Unix Milliseconds

- Local Time

- UTC Time

- ISO String

- Day of Week

- Timezone

- UTC Offset

Formula / Method

Unix seconds = milliseconds since January 1, 1970 UTC ÷ 1000.

Timestamp Conversion Report No report generated yet

Timestamp Notes

Choose conversion mode and enter date/time or timestamp, then click Convert.

Unix timestamp counts time from January 1, 1970 UTC.

Seconds timestamps usually have 10 digits, while milliseconds timestamps usually have 13 digits.

Local time output depends on the browser timezone.

About This Tool

Timestamp Converter is a free online date and time tool that helps you convert Unix timestamp to readable date and convert date/time back to Unix timestamp.

You can convert timestamps in seconds or milliseconds, view local date/time, UTC date/time, ISO string, Unix seconds, Unix milliseconds, timezone name, UTC offset and day of the week. The tool also includes current time conversion, sample data, copy result and downloadable report.

This tool is useful for developers, API debugging, database records, server logs, JavaScript timestamps, Python timestamps, analytics events, scheduling systems and anyone who needs quick timestamp conversion.

How to Use Timestamp Converter

1. Choose conversion mode.
2. Select Date to Timestamp if you want to convert a date/time into Unix timestamp.
3. Select Timestamp to Date if you want to convert Unix timestamp into readable date.
4. Enter the date/time or timestamp.
5. Choose whether your timestamp is in seconds or milliseconds.
6. Choose the main output format.
7. Click Convert.
8. Copy or download the report if needed.

Privacy Note: This Timestamp Converter works directly in your browser using JavaScript. Your date, time and timestamp values are not uploaded to our server.

Frequently Asked Questions

Is this Timestamp Converter free?

Yes. This Timestamp Converter is free to use and does not require signup.

What is a Unix timestamp?

A Unix timestamp is a number that represents the time passed since January 1, 1970 at 00:00:00 UTC.

Can I convert timestamp to date?

Yes. Choose Timestamp to Date mode, enter your Unix timestamp, choose seconds or milliseconds, then click Convert.

Can I convert date to timestamp?

Yes. Choose Date to Timestamp mode, select your date and time, then click Convert. The tool will show Unix seconds and Unix milliseconds.

What is the difference between seconds and milliseconds timestamp?

Seconds timestamp is usually 10 digits, while milliseconds timestamp is usually 13 digits. JavaScript Date commonly uses milliseconds.

Does this tool upload my timestamp data to the server?

No. This converter works directly in your browser using JavaScript. Your date and timestamp values are not uploaded to our server.