> For the complete documentation index, see [llms.txt](https://docs.peakcommerce.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.peakcommerce.com/product/using-peakcommerce/market-profiles/automatic-detection-of-user-location-currency.md).

# Auto-Detecting Currency, Language & Profile

Market Locale rules detect a visitor's locale and automatically apply the right **currency**, **language**, and **profile** — so customers get a localized experience without choosing anything, while keeping the freedom to switch currency at checkout.

## Add a locale rule

Go to **Commerce → Market Locales** and click **Add Locale Rule**. Each rule has:

* **Name** — a label for the rule.
* **Locale Pattern** — the visitor locale(s) it matches (for example a country or language region).
* **Currency** — the currency to apply.
* **Language** — the language to apply.
* **Profile** — the profile to apply for that market.
* **Priority** — the order rules are evaluated in (higher priority wins).
* **Status** — whether the rule is active.

## How rules are applied

* The system detects the visitor's locale and applies the **highest-priority matching** rule.
* If no rule matches, a **default** applies (fallback behavior).
* Shoppers can **manually override** the auto-detected currency at checkout.

Because rules are reusable and prioritized, you can layer a broad default (say, a region) with specific overrides (a single country) without duplicating configuration.


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