Choose the language the app speaks and whether it looks light or dark. Both controls sit in the top bar, next to your name.
In the top bar, select the flag with the two-letter language code, marked 1.
The language list opens.

Choose a language.
The app reloads in that language.
You can also choose the language on the sign-in screen, before you sign in. The app keeps your choice for the next time.
In a right-to-left language, such as Hebrew, the app mirrors the whole layout. The side menu moves to the right, and tables read from right to left.

Names you entered yourself, such as unit names, keep the language you typed them in.
The mode icon sits to the left of the language list.
The icon cycles through three modes in this order:
| Icon | Mode now | What the app does |
|---|---|---|
| Moon | Light | Always light. |
| Gear | Follow your system | Light or dark, to match your computer or phone setting. |
| Sun | Dark | Always dark. |

The app stores your language and mode in this browser, not in your user.
See Sign out and manage active sessions.
Some settings belong to the account, not to you:
Owners change these settings in Set date and unit formats.