> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://katalyz.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Language & formats

Katalyz adapts to how you read and write — your preferred language, and how you expect dates, times, and numbers to be displayed.

## Access language settings

Open your **profile settings** and go to the **Language & formats** section. You'll find two groups: **Langue** (language picker) and **Format** (date / time / number format pickers).

## Language

Set the Katalyz interface language for your account. Two options today:

- **English**
- **Français**

More languages will land over time.

This affects:
- Navigation, buttons, menus, and UI copy
- System-generated emails sent **to you**
- AI-assisted content written for you (if language-aware)

It does **not** affect:
- Room content (those languages are set per-room)
- Notifications sent to buyers (those use the buyer's room language)
- Other teammates' UI (each user sets their own)

## Date format

Pick how dates are displayed across Katalyz:

| Format | Example |
|---|---|
| `MM/DD/YYYY` | 03/12/2026 (US) |
| `DD/MM/YYYY` | 12/03/2026 (UK / EU) |
| `YYYY-MM-DD` | 2026-03-12 (ISO) |
| `MMM DD, YYYY` | Mar 12, 2026 |
| `DD MMM YYYY` | 12 Mar 2026 |
| `MMMM DD, YYYY` | March 12, 2026 |
| `DD MMMM YYYY` | 12 March 2026 |

Pick what your team expects. If you collaborate internationally, the ISO format (`YYYY-MM-DD`) is often the clearest.

## Time format

- **12-hour** (2:30 PM)
- **24-hour** (14:30)

## Number format

Two options today:

- `1,000.00` — US
- `1 000,00` — Français

Affects display of currency amounts, custom properties of type Number and Currency, and activity metrics.

## These settings are per-user

Each member sets their own language and formats. Your choices don't affect teammates.

## What about room language?

Rooms have their own language setting, managed by the room's **Owner** or **Editor**. The room language affects:

- Buyer-facing copy (CTAs, system messages)
- Invitation emails sent to buyers
- Default notification language for buyer recipients

See [Update room language](→ 02-rooms/01-creating-rooms/01-creating-a-room) for how to set it.

## Related articles
- [Your personal profile](https://katalyz.crisp.help/en/article/your-personal-profile-txq1jv/)
- [Notification preferences](https://katalyz.crisp.help/en/article/notification-preferences-1mglop1/)