TXT · Text & Data tools

ISO Date Converter

ISO 8601 Date String

Paste an ISO 8601 date string to convert it to other formats.

Local date & time
UTC date & time
Unix timestamp (seconds)
Unix timestamp (milliseconds)
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ISO 8601 conversion

Paste an ISO 8601 date string to instantly expand it into four standard formats. The input can include a Z suffix for UTC or a numerical offset like +02:00. Invalid strings simply return blank outputs.

Date and time outputs

The tool generates a Local date & time string using your device’s active timezone. It also provides a UTC date & time string for a normalized, fixed reference. Each result has its own copy button for quick extraction.

Timestamp outputs

For system integrations, the converter outputs Unix timestamp (seconds) and Unix timestamp (milliseconds). Use the seconds value for backend APIs and databases, or the millisecond value for JavaScript payloads and browser-based logging.

Frequently Asked Questions

ISO 8601 is a date and time format used in APIs, databases, logs, and JSON. A typical UTC value looks like `2025-01-15T18:42:10.123Z`.

Yes. Strings with `Z` or offsets such as `+02:00` are parsed as a single moment in time, then shown in local time, UTC, Unix seconds, and Unix milliseconds.

The outputs are local date and time, UTC date and time, Unix timestamp in seconds, and Unix timestamp in milliseconds.

No.

Invalid values do not produce output. Check the date, time, and timezone offset in the input.

No.

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