Scandi boy name: Björn vs Nils

[NorseMum]

Hello, looking for potential future sibling names and want to know which one you think would work best in the UK: Björn or Nils? Really like both (they are family names on my side)

I'm not keen on Bjorn partly because of the Abba connection so I'd choose Nils even though I wouldn't know how to pronounce it and it makes me think 'nil' or nothing which is a bit negative.
If I was to choose a Scandi boys name then I love Lars.

OP just said Scandi.
@ArtemisNutella , I think English-only speakers say Bee-orn not Byorn, and some will say B-jorn.
Borg was always Borg in the UK not Bory.

I think plenty of people won't know who Björn Ulvaeus is.

So, I'd say "Nils" as in "hills" with an "N"... Björn is trickier to explain...almost like "Bey-uhrn" 😬

Björn - how many syllables and which one is stressed? Do the trema indicate an umlaut or a diaeresis?

Björn is one syllable.

Ö is a letter (vowel). The Swedish alphabet has three more letters than the English alphabet. They're Å, Ä, Ö and come at the end of the alphabet.

The dots do not indicate umlaut or diaeresis.

Thanks.
The "Bey-uhrn" suggested 2, the IPA (ˈbjœːɳ) 1.

Björn 1
Nils 0

I think you just answered your own question with this response 😅

But do you live in Sweden and the child has a British father so will be visiting British family regularly? This is our situation, but Iceland not Sweden, and a few mispronunciations or misspellings are not a huge deal, as long as the grandparents/uncles/aunts have got it down. Or are you living in the UK?

If the latter it really has to be Nils out of the two imo, unless you're fine with him being Bee-orn / Buh-jorn.

I absolutely love Nils. Fabulous choice.

Björn: one syllable. The 'bj' is a digraph, and blends with the 'örn' to form a monosyllabic word, much like in 'storm'. It rhymes with the English 'burn'; the letter ö is read as the phonemes ir / er / ur in the English words Sir / her / fur. It is a 'long' vowel sound in this name.
I have never heard ABBA Björn (Ulvaeus') or Björn Borg's names said correctly in all my years in England, but always as with two syllables, separating a 'bee' from a sort of 'orn'.
OP, I really love Björn, but it seems like hard work in the UK. Nils, on the other hand, always sounded like 'pilsner' to me when I was little, which made me not like it.

@KostaBoda , English monoglots struggle with digraphs and diphthongs.

Björn Ulvaeus or Björn Borg are be-YORN here. I think it's probably nearer Yearn with a B at the start (in the same way as Burn is Urn with a B at the start).

Yes, very similar to BYearn!