The number 1,234.56 means one thousand two hundred and thirty-four and fifty-six hundredths in the United States, but in Germany the same value is written 1.234,56. The date 03/04/2026 is 3 April in most of Europe and 4 March in the US. These small differences cause real mistakes in invoices, spreadsheets, forms and contracts. This guide explains the main European formats and how to convert them.
Most European countries write the day first: day / month / year, such as 03/04/2026 or 03.04.2026 in Germany. The ISO 8601 format 2026-04-03 (year-month-day) is used in Sweden and in many technical contexts, and it is the safest format for international documents. The United States uses month / day / year, which is the cause of most mix-ups.
In Germany, France, Italy and Spain the euro sign usually comes after the amount, with a space: 1.234,56 €. In Ireland and the Netherlands it often comes before: €1,234.56 in Ireland or € 1.234,56 in the Netherlands. When in doubt, follow the style used in the country of your reader.
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Most of continental Europe, including Germany, France, Italy, Spain, the Netherlands and Poland.
3 April 2026 in most of Europe, and 4 March 2026 in the United States.
ISO 8601 (2026-04-03) is unambiguous everywhere.
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The amount 1234567.89 is written 1,234,567.89 in the US and the UK, 1.234.567,89 in Germany and Italy, 1 234 567,89 in France and 1'234'567.89 in Switzerland. As a euro price it becomes 1.234.567,89 € in German and Italian style. If you copy such a figure into a spreadsheet that expects another format, you may get an error or, worse, a wrong number that looks plausible.
When your reader may be in another country, avoid ambiguity. Write "3 April 2026", add the currency code (EUR 1,234.56) and explain the decimal separator if your document is technical. Many companies standardise on ISO dates and plain numbers without thousands separators for data files, and use localised formats only for display.
Formats depend on the region, not only on the language. German in Switzerland uses 1'234.56, while German in Germany uses 1.234,56. French in Switzerland also differs from French in France. This is why the converter lists countries, not just languages, and lets you compare each one at a glance.
A misread number can lead to a wrong payment, a wrong order quantity or a contract dispute. A misread date can cause a missed deadline or a booking on the wrong day. Spending a minute to confirm the format is much cheaper than fixing the mistake later, so always check before you send an important document abroad.