SE
Sweden
ISO 3166 Country Code
Europe
Country Codes
Alpha-2 Code (ISO 3166-1 alpha-2)
SE
Alpha-3 Code (ISO 3166-1 alpha-3)
SWE
Numeric Code (ISO 3166-1 numeric)
752
Common Usage
HTML lang attribute
<html lang="se">
URL locale parameter
https://example.com/se/
JavaScript/TypeScript
const country = "SE"; const countryName = "Sweden";
API Response (JSON)
{
"country": "SE",
"countryName": "Sweden",
"alpha3": "SWE",
"numeric": "752"
}ISO 3166 Standard
ISO 3166 is the international standard for country codes. The alpha-2 code (SE) is the most commonly used format for domain names, language tags, and internationalization. The alpha-3 code (SWE) is used in shipping, banking, and official documents. The numeric code (752) is language-independent and useful for systems with character encoding limitations.