BY · BLR
Belarus languages and locale codes
Official or primary languages with practical BCP 47 locale recommendations.
BCP 47
Languages and locale codes
| Language | Code | Recommended locale | Status |
|---|---|---|---|
| Russian | Official | ||
| Belarusian | Official |
Use a Belarus locale in a product
When content is written in Russian, use the lang tag below to describe the text. The Intl locale selects regional formatting. This is one example from the table, not a claim about every visitor's language preference.
<html lang="ru">
new Intl.NumberFormat("ru-BY").format(1234567.89);Compare number and date formatting
These examples use 1234567.89 and the fixed instant 2026-01-15T13:45:00Z, with dates displayed in UTC. Intl computes the results when this site is built; your browser and locale-data version may differ. Unsupported tags are identified instead of showing default-language output.
| Locale | Number | Date | Currency |
|---|---|---|---|
ru-BY | 1 234 567,89 | 15 января 2026 г. | BYN: 1 234,50 Br |
be-BY | 1 234 567,89 | 15 студзеня 2026 г. | BYN: 1234,50 Br |
Currency examples use the fixed value 1234.5. SIX and CLDR snapshot: 2026-09-26. Specify each currency explicitly; formatting is not an exchange rate.
new Intl.NumberFormat("ru-BY", { style: "currency", currency: "BYN" }).format(1234.5);Before adopting a tag, run Intl.NumberFormat.supportedLocalesOf() and Intl.DateTimeFormat.supportedLocalesOf() in your target runtime. A locale does not select a time zone or translate interface text; specify currency explicitly when formatting money.
Data provenance
Sources
- ISO 3166-1 country codes
- Unicode CLDR territory information
- SIX: ISO 4217 List One
- Unicode CLDR 48 currency territory data
Data snapshot: 2026-09-26