Argentina Number Format
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Format Rules
Argentina formatting implementation notes
For Argentina, format numbers with the explicit locale es-AR; the reference value 1234567.89 renders as 1.234.567,89.
Argentina's reference format uses "," as the decimal mark and period (".") for grouping. The integer uses repeating groups of three digits. Pass "es-AR" directly to Intl.NumberFormat instead of replacing punctuation in a preformatted string.
ARS is shown with $ immediately before the amount; the same reference value renders as $ 1.234.567,89. The percent sign appears immediately after the amount. Use the ISO currency code for storage and interchange because a visible symbol can be shared by unrelated currencies.
Western 0–9 digits are the page's reference digit system, and the negative pattern is -n. Treat es-AR as the reference locale for this page, but still respect the user's explicitly selected language and numbering-system preferences. Validate output with formatToParts() when spacing, signs, or bidirectional literals affect the interface.
- Locale: es-AR
- Decimal and grouping: 1.234.567,89
- Currency: ARS → $ 1.234.567,89
- Digits: Western 0–9 digits
Reviewed 19 July 2026. Sources: Unicode locale number formats · Intl.NumberFormat reference
What's different here
- Decimal mark is a comma (,) (en-US uses a period (.)).
- Thousands are grouped with a period (.) (en-US uses a comma (,)).
- Uses the same number pattern (decimal mark, grouping, symbol and percent placement) as Brazil, Chile, Colombia, Venezuela, Ecuador and Bolivia in Americas, plus 2 pages in other regions.
- Nearby differences: Mexico (es-MX) uses a period (.) as the decimal mark instead of a comma (,) and groups with a comma (,) instead of a period (.); Peru (es-PE) uses a period (.) as the decimal mark instead of a comma (,) and groups with a comma (,) instead of a period (.); Guatemala (es-GT) uses a period (.) as the decimal mark instead of a comma (,) and groups with a comma (,) instead of a period (.); Honduras (es-HN) uses a period (.) as the decimal mark instead of a comma (,) and groups with a comma (,) instead of a period (.).
- Currency: ARS has ISO minor unit 2. The symbol $ is also used by USD, CAD, MXN, CLP, COP and CUP and 6 other currencies in this directory.
- Postal address order: name → building → street + street number → district → postcode + city → country. See address formats.
Code Examples
// Basic number
new Intl.NumberFormat('es-AR').format(1234567.89)
// → "1.234.567,89"
// Currency
new Intl.NumberFormat('es-AR', {
style: 'currency',
currency: 'ARS'
}).format(1234567.89)
// → "$ 1.234.567,89"
// Percentage
new Intl.NumberFormat('es-AR', {
style: 'percent',
minimumFractionDigits: 1
}).format(0.125)
// Compact notation
new Intl.NumberFormat('es-AR', {
notation: 'compact'
}).format(1234567)Negative Number Formats
new Intl.NumberFormat('es-AR').format(-1234567.89)new Intl.NumberFormat('es-AR', { style: 'currency', currency: 'ARS', currencySign: 'accounting' }).format(-1234567.89)
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