Swedish/Norwegian/Danish Special Characters Cheatsheet

The Nordic languages split into two camps over three vowels, and knowing which camp you are in prevents a whole category of error. Swedish and Finnish use ä and ö. Danish and Norwegian use æ and ø for the same two sounds. All of them use å. So the Swedish för is the Danish and Norwegian for, and Swedish träd corresponds to Danish træ. These are not stylistic variants — using the wrong pair marks the text as the wrong language.

All five are full letters with their own alphabet positions, and they come last. The Swedish and Finnish alphabet ends ...x, y, z, å, ä, ö; the Danish and Norwegian ends ...x, y, z, æ, ø, å. This is why a name beginning with Å or Ø appears at the end of a Nordic phone book rather than filed under A or O, and why sorting Nordic data with a default English collation puts everything in the wrong order. If a Nordic list looks scrambled, the collation is usually the cause.

The letter å has a memorable origin: it was a long a, written as an a with a small a above it, which over time compressed into a ring. Danish adopted it only in 1948, replacing the older double-a spelling, which is why the city is now Aarhus or Århus depending on which spelling the municipality prefers — both are current and the city itself switched back to Aarhus in 2011. Norwegian made the same change in 1917.

Substituting these letters degrades text in ways that matter. The conventional fallbacks are aa for å, ae for æ, oe for ø, and ae or oe for ä and ö, and they are acceptable only where the real characters cannot be represented, such as in domain names or legacy identifiers. In ordinary text they look like transliteration. Note also that Danish and Norwegian ø is not the same character as the empty-set symbol ∅ or the Greek phi, though they render similarly in some fonts.

On Windows, hold Alt with Num Lock on: å is Alt+0229, ä Alt+0228, ö Alt+0246, ø Alt+0248 and æ Alt+0230, with capitals at Alt+0197, Alt+0196, Alt+0214, Alt+0216 and Alt+0198. On macOS, Option+A gives å, Option+O gives ø, Option+apostrophe gives æ, and Option+U followed by the vowel gives ä and ö. On Linux, Compose then a then a gives å, Compose then / then o gives ø, and Compose then a then e gives æ. All Nordic keyboard layouts place these three letters on dedicated keys to the right of L, which is much faster than any code for real writing.