Indonesian Number to Words in JavaScript

Use this page when you need Bahasa Indonesia or Javanese number words in product flows like invoices, banking summaries, receipts, or spoken-number interfaces.

Locale codes: id-ID, jv-ID · Numbering system: Short scale · Currency: Rupiah / Sen · Script: Latin

Install

npm install to-words

Basic Conversion

import { ToWords } from 'to-words';

const id = new ToWords({ localeCode: 'id-ID' });
const jv = new ToWords({ localeCode: 'jv-ID' });

id.convert(137); // "Seratus Tiga Puluh Tujuh"
id.convert(1000000);

jv.convert(2500);
jv.convert(1000000);

id-ID is the safest default when your UI copy is in Indonesian. jv-ID is useful for region-specific experiences where Javanese phrasing matters.

Currency - Rupiah / Sen

id.convert(98000, { currency: true });
id.convert('1250.50', { currency: true });

jv.convert(78000, { currency: true });

Ordinal Numbers

id.toOrdinal(3);
id.toOrdinal(21);

Regional Notes

• id-ID uses Indonesian number words like Juta, Miliar, and Triliun
• jv-ID provides Javanese wording while keeping the same API shape, so you can switch locales without rewriting application logic
• id-ID also supports fraction-style decimals for legal and financial wording

Locale Codes

Locale code	Language	Currency	Notes
id-ID	Indonesian	Rupiah / Sen	Best default for Indonesian products and admin tools
jv-ID	Javanese	Rupiah / Sen	Useful for region-specific apps and localised voice output

Related

• Currency guide
• All locales
• Vietnamese

FAQ

Q: Does to-words support terbilang-style Indonesian output? Yes. Use id-ID for Indonesian wording with the standard convert(), toOrdinal(), and currency APIs.

Q: Can I switch between Indonesian and Javanese without changing my app code? Yes. Keep the same API and swap only the locale code between id-ID and jv-ID.