What is a Unix epoch timestamp?

A Unix epoch timestamp is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC (the "Unix epoch"). It is a standard way to represent moments in time in software and databases.

What is the difference between seconds and milliseconds?

Seconds-based timestamps (e.g. 1700000000) are used in most Unix/Linux tools and APIs. Milliseconds-based timestamps (e.g. 1700000000000) are common in JavaScript's Date.now() and many databases. Multiply seconds by 1000 to get milliseconds.

Does the timezone affect the result?

Yes. The same wall-clock time (e.g. 2024-01-01 12:00:00) represents a different moment depending on the timezone. Always specify the correct timezone to get an accurate epoch value.

What date formats are supported?

The tool provides a date-time picker, so any valid date and time you enter is accepted. You can also type directly into the input field using YYYY-MM-DD HH:MM:SS format.

What is the maximum Unix timestamp?

The maximum value for a 32-bit signed integer is 2147483647, which corresponds to January 19, 2038 (the "Year 2038 problem"). 64-bit systems and modern languages handle much larger timestamps without issue.

Date To Epoch

Name: Date To Epoch
Availability: InStock
Author: Nham Vu

Enter a date and time to instantly get the Unix epoch timestamp in seconds and milliseconds.

Date & Time Input

Date & Time

Timezone

Epoch Results

Enter a date and click Convert to see the epoch timestamp.

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Summary

Enter a date and time to instantly get the Unix epoch timestamp in seconds and milliseconds.

How it works

Type or pick a date and time in the input fields.
Select the timezone that matches your date.
Click "Convert" or press Enter to compute the epoch value.
Copy the seconds or milliseconds timestamp with one click.
Use "Now" to instantly convert the current moment.

Use cases

Set expiration timestamps in JWT tokens or API payloads.
Debug log timestamps by converting human dates to epoch.
Compare event times across different timezones.
Generate seed data for databases that store UNIX timestamps.
Verify scheduled task or cron job timing.
Convert historical dates for analytics or data pipelines.
Check token or session expiry values in authentication systems.

Frequently Asked Questions

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Epoch To Date Unix Timestamp Converter Json Formatter

Last updated: 2026-05-29 · Reviewed by Nham Vu