Timestamp Converter

Convert between Unix timestamps and human-readable dates, in both directions. Paste a timestamp to see the UTC, local, and ISO 8601 date, or pick a date to get its Unix timestamp.

Unix Timestamp → Date

Unix Timestamp (seconds or milliseconds)

Date → Unix Timestamp

Date and Time

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Why use Timestamp Converter?

This tool converts between Unix timestamps and human-readable dates in both directions. Paste a timestamp to see it formatted as UTC, your local time, and ISO 8601, or pick a date and time to get the corresponding Unix timestamp in both seconds and milliseconds.

Key benefits

Auto-detects seconds vs. milliseconds
Shows UTC, local time, and ISO 8601 formats at once
Use Now button for the current timestamp

Features

Bidirectional timestamp/date conversion
Seconds and milliseconds output
One-click copy of the ISO date

Popular use cases

Debugging an API response with a Unix timestamp field
Converting a log timestamp to a readable date
Getting the current epoch time for testing

How to use Timestamp Converter

1
Convert a timestamp
Paste a Unix timestamp (seconds or milliseconds) to see it as UTC, local time, and ISO 8601.
2
Or convert a date
Pick a date and time to get its Unix timestamp in seconds and milliseconds.

Frequently asked questions

How does the tool know if my timestamp is in seconds or milliseconds?

Timestamps with 10 or fewer digits are treated as seconds; longer values are treated as milliseconds, matching common Unix timestamp conventions.

What is a Unix timestamp?

The number of seconds (or milliseconds) that have elapsed since January 1, 1970 00:00:00 UTC, widely used in programming and databases.

Is my data uploaded anywhere?

No. All conversion happens locally in your browser using JavaScript's Date object.

Last reviewed: July 2026

Unix Timestamp → Date

Date → Unix Timestamp

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