Unix timestamp converter

Convert between Unix timestamp and ISO 8601 date in both directions, designed for debugging APIs, databases and logs with timestamps.

Processed on your device. Nothing is sent to any server.

Timestamp → Date

Timestamp (seconds)

2026-10-01T12:32:16.000Z

Date → Timestamp

ISO 8601 date

1790857936

The Unix timestamp is the number of seconds elapsed since January 1, 1970 (UTC), the standard format for representing dates in most systems, databases and APIs.

Use cases

Debugging timestamps returned by an API.
Converting an ISO 8601 date to a timestamp for a database query.
Checking what date a log value corresponds to.

How it works

1
Timestamp to date
Enter a timestamp in seconds and get the ISO 8601 date in UTC.
2
Date to timestamp
Enter an ISO 8601 date and get its equivalent Unix timestamp.

Technical details

Example: 1767225600 ⇄ 2026-01-01T00:00:00.000Z.
In the date → timestamp direction you can enter an ISO date with an offset ("2026-01-01T10:00:00+02:00") or ending in Z (UTC). Without a time zone, the browser reads it as local time.
Timestamps are in seconds; a 13-digit one is in milliseconds and must be divided by 1000.

Frequently asked questions

What unit is the timestamp in?

Seconds, the Unix standard. If your system uses milliseconds (like JavaScript internally), divide by 1000 before entering it.

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