Language & Locale
Choose your interface language separately from project formatting.
Interface language belongs to you. Units, currency and regional formatting belong to the project. Changing one does not automatically change the others.
Choose interface language
Open the avatar menu and choose Your profile. Set Interface Language to the language you want. The interface updates when the selection changes. Check any save error: if your preference could not be saved, it can reset on reload.
Choose regional format
In the editor, open Settings → Units & formatting. Set Regional format for number, date and currency formatting. This does not translate menu labels. The General section under Canvas & drawing settings also exposes language and formatting controls.
Choose units and currency
Set Unit System separately from language. Set Currency deliberately: existing prices are relabeled without exchange-rate conversion. Check the confirmation and review monetary values after a change.
Read the Guide in your language
The Guide uses English as its master. Where an up-to-date localized article is unavailable, the Guide can display the English article. A translated interface label is not evidence that every Guide article has already been translated.