World Date & Number Formats - Read 03/04/2026 and 1.000,50 Correctly

About World Date & Number Formats

The mistake that costs a factor of a thousand

Continental Europe and most of Latin America use a dot for thousands and a comma for decimals; the English-speaking world does the opposite. So 1.000 reads as one thousand in Berlin and as one in Boston. Both readings are correct in their own convention, which is exactly why the string on its own cannot tell you which one applies. When a figure matters, look for a value that carries both separators, such as 1.234.567,89 or 1,234,567.89 — those are unambiguous.

How the ambiguity check works

Paste a string and every convention in this table is tried against it. A reading is kept only when it produces a real calendar date or a well-formed number under that convention, so 31/02/2026 yields nothing and 12.34.567 is rejected because the groups are the wrong size. Countries are credited only when they use that separator as well as that field order, so a country that writes dates with dots will not appear under a string written with slashes. Years must be four digits: with a two-digit year not even the position of the year can be determined, and guessing would bury the real answers under low-confidence ones.

How to write a date nobody can misread

ISO 8601 orders the fields from largest to smallest and always pads to four-two-two: 2026-03-04. No country reads that as 4 March, because the leading four-digit group can only be a year. Spelling the month out also works within one language. What does not work is picking whichever short form you are used to and assuming the reader shares it. Readings in this tool are always reported in ISO 8601 for the same reason.

What is and is not covered

The table covers 54 countries whose written conventions can be expressed as a field order plus separators. Countries whose everyday civil calendar is a different calendar system altogether are out of scope, because a table of Gregorian field orders cannot describe them honestly. Taiwan, Thailand and Japan are included with a note, since their alternative year numbering sits on the Gregorian months and days. The tool reads one date or number at a time; normalising a whole document is a different job and belongs elsewhere.

FAQ

Common questions and answers about this topic.

Is 03/04/2026 the third of April or the fourth of March?

Both, depending on who wrote it. Most of the world puts the day first, so 03/04/2026 is 3 April. The United States and a handful of other countries put the month first, making it 4 March. The string carries no clue about which convention was used, so the only reliable fix is to ask the sender or to look for another date in the same document where the day exceeds twelve — that one can only be read one way, and it reveals the convention.

Does 1.000 mean one thousand or one?

One thousand in Germany, Spain, Italy, Brazil and much of Europe and Latin America, where the dot groups thousands. One, in the United States, United Kingdom, Japan and elsewhere, where the dot is the decimal point. This is the single most expensive ambiguity in the table because the two readings differ by a factor of a thousand. If the figure matters, request it written with both separators or with an explicit currency and decimal count.

Is there a date format nobody misreads?

ISO 8601: 2026-03-04, always year-month-day with four-two-two padding. The four-digit leading group can only be a year, which removes the ambiguity entirely. It is the international standard for exchanging dates and is what this tool uses to report its own results. Within a single language, writing the month as a word works too.

Why does much of Europe use a comma as the decimal point?

Both marks were in use across Europe from the early days of decimal notation, and different national standards settled on different choices. The comma became the continental convention and is the form recommended by the International Bureau of Weights and Measures, while the dot spread through the English-speaking world and, with it, through computing. Neither is more correct; they are simply two conventions that never converged.

In Arabic and Hebrew, are numbers written right to left as well?

No. The text runs right to left, but numbers keep their digits in the same order as everywhere else, with the most significant digit on the left. What changes is where the number sits relative to the surrounding words, and where the currency symbol lands. The writing direction column here describes the text, not the digits.

Why does a Taiwanese form say 115 and a Thai receipt say 2569?

They number years from a different starting point while keeping Gregorian months and days. Taiwan counts from 1912 as year one, so the Gregorian year minus 1911 gives the Minguo year. Thailand uses the Buddhist era, which is the Gregorian year plus 543. Japan numbers years within the reigning imperial era. In all three cases only the year changes; the month and day are the ordinary Gregorian ones.

Data Sources

This tool's data is compiled from the authoritative sources below.

Data last maintained 2026-07-28