CH
Switzerland
ISO 3166 Country Code
Europe
Country Codes
Alpha-2 Code (ISO 3166-1 alpha-2)
CH
Alpha-3 Code (ISO 3166-1 alpha-3)
CHE
Numeric Code (ISO 3166-1 numeric)
756
Common Usage
HTML lang attribute
<html lang="ch">
URL locale parameter
https://example.com/ch/
JavaScript/TypeScript
const country = "CH"; const countryName = "Switzerland";
API Response (JSON)
{
"country": "CH",
"countryName": "Switzerland",
"alpha3": "CHE",
"numeric": "756"
}ISO 3166 Standard
ISO 3166 is the international standard for country codes. The alpha-2 code (CH) is the most commonly used format for domain names, language tags, and internationalization. The alpha-3 code (CHE) is used in shipping, banking, and official documents. The numeric code (756) is language-independent and useful for systems with character encoding limitations.