Mastodon supports 96 different languages and dialects.

You can choose your interface language, filter your timelines by language, and say which languages you post in. There's also a built-in automatic translation system on some servers (depending on whether your admin has switched it on).

It's important to set your posting language as this is what allows the language filters and automatic translation systems to work.

You can find out how to do all these things at:

➡️ https://fedi.tips/setting-your-language-preferences-on-mastodon-and-filtering-out-posts-in-other-languages

Setting your language preferences on Mastodon, filtering out posts in other languages, filtering search results by language | Fedi.Tips – An Unofficial Guide to Mastodon and the Fediverse

An unofficial guide to using Mastodon and the Fediverse

@feditips seems like very few of the mobile clients (that I’ve tried) support setting the language. I’d love for this to work.
@anderseknert @feditips If you’re an iOS user then try @IceCubesApp . It does a really nice job translating and makes it easy to set post language.
It even warns you if you are about to answer a post in the wrong language 😅
@bech @anderseknert @feditips @IceCubesApp yes! It’s the next best thing after actual automatic detection from Mastodon itself.