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Date Format Converter

Paste a date in almost any form and see it instantly in every common format.

Slash dates (DD/MM vs MM/DD)

Only affects a plain slash date like 07/30/2026. Parsed entirely in your browser.

All formats

Paste a date above to see it converted.

How to convert a date between formats

  1. Paste or type a date

    Enter a date in almost any common form, such as ISO 8601, a slash date, a written date, RFC 2822, or a unix timestamp.

  2. Resolve ambiguous slash dates

    If the date uses slashes, use the day-first or month-first toggle to pin down which number is the day.

  3. Read the full table

    The same moment appears in every supported format at once: ISO, RFC 2822, US, European, written, and both unix formats.

  4. Copy every format

    Click Copy all formats to copy the whole table as plain text in one go.

Why use this tool

Recognises many input shapes

Paste an ISO 8601 date or date-time, a slash date, a written date like "July 30, 2026", an RFC 2822 string, or a unix timestamp in seconds or milliseconds.

One paste, every format

The same moment is shown as ISO date, ISO date-time, RFC 2822, US and European slash dates, long and short written forms, and both unix formats at once.

Resolves ambiguous slash dates

A day-first or month-first toggle decides whether 07/08/2026 means 7 August or 8 July, since the digits alone cannot say.

Day of week, day of year, and ISO week

Alongside the format table, see which weekday the date falls on, its position in the year, and its ISO 8601 week number.

One-click copy of the whole table

Copy all formats puts every row into the clipboard as plain text, ready to paste into a document or a message.

Private by design

The date you enter is parsed and reformatted entirely in your browser, and nothing is uploaded.

About this tool

This tool takes a date typed or pasted in almost any common shape and shows the same moment written out in every other common format at once. It recognises ISO 8601 dates and date-times, slash dates, written dates such as "July 30, 2026" or "30 Jul 2026", RFC 2822 strings, and unix timestamps given in either seconds or milliseconds. Whatever comes in, the table shows ISO 8601 date, ISO 8601 date-time, RFC 2822, US (MM/DD/YYYY), European (DD/MM/YYYY), a long written form, a short written form, the day of week, the day of year, the ISO week number, and both unix formats.

A plain slash date such as 07/08/2026 is genuinely ambiguous between 7 August and 8 July, so a day-first or month-first toggle sits above the table to pin down which reading applies before the rest of the formats are generated. Every value in the table is resolved in Coordinated Universal Time, so the result stays the same no matter which time zone the browser viewing the page happens to be in.

The whole conversion runs in your browser, so the date you enter is never uploaded or stored. To convert a unix timestamp on its own, use the unix timestamp converter; to find the span between two dates, use the date difference calculator; and to work with a date across several time zones at once, use the timezone converter.

Frequently asked questions

What date formats can this tool read?
It recognises ISO 8601 dates and date-times, slash dates, written dates like "July 30, 2026" or "30 Jul 2026", RFC 2822 strings, and unix timestamps given in either seconds or milliseconds.
How does it tell seconds and milliseconds apart in a timestamp?
A plain number with 10 digits or fewer is read as seconds since the unix epoch, and a longer number, such as a 13-digit value, is read as milliseconds.
How is a slash date like 07/08/2026 handled?
It is genuinely ambiguous, so the day-first or month-first toggle above the table decides whether the first number is the day or the month before the rest of the formats are generated.
What time zone are the results shown in?
Every format in the table is resolved in Coordinated Universal Time, so the output is the same regardless of the time zone set on the device viewing the page.
Is the date I enter uploaded anywhere?
No. Parsing and reformatting both happen entirely in your browser, and nothing you type is sent to a server.

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