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Date format converter

Pick a date to see it in every common format, ready to copy.

How Date format converter works

Date format converter takes a single date and outputs it in every common format at once: ISO 8601 (2025-06-05), US (06/05/2025), European (05/06/2025), dotted (05.06.2025), long-form ("5 June 2025"), compact (20250605) and Unix timestamp. Copy the one you need rather than reformatting by hand.

This is the tool when you need to adapt a date for a spreadsheet, an API, a legal document or an internationalized UI and cannot remember the right order of day, month and year for each convention. It can also parse a pasted date string and let you pick the input format when there is ambiguity, for example whether 04/05/2025 is April 5th or May 4th.

Frequently asked questions

Is the date I type transmitted to any server?

No. All format conversions run in your browser with JavaScript. The date stays on your device for the entire session and is not sent to Sunasty or any third party.

What formats does it output?

ISO 8601 (YYYY-MM-DD), US month-first (MM/DD/YYYY), European day-first (DD/MM/YYYY), dotted European (DD.MM.YYYY), compact (YYYYMMDD), long-form natural language and Unix timestamp (seconds since 1970-01-01 UTC).

Can it parse a pasted date string, not just a date picker?

Yes. You can type or paste a date in several common formats and the tool recognises it, letting you pick the input format if there is ambiguity, for example whether 04/05/2025 is April 5th or May 4th.

Does it work offline?

Yes, once the page has loaded. Because the processing happens on your device, you can disconnect from the network and the tool keeps working. This is the clearest proof that your data never leaves your machine.

Is it free? Do I need an account?

It is completely free and requires no sign-up. There are no watermarks, no daily limits and no tracking cookies needed to use the tool.

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