Thai Number to Words in JavaScript (th-TH)

Use th-TH when your app needs Thai wording for receipts, invoices, educational products, or spoken-number features that should feel native to Thai users.

Locale codes: th-TH · Numbering system: Thai large-number grouping · Currency: Baht / Satang · Script: Thai

Install

npm install to-words

Basic Conversion

import { ToWords } from 'to-words';

const tw = new ToWords({ localeCode: 'th-TH' });

tw.convert(10); // "สิบ"
tw.convert(100);
tw.convert(10000);
tw.convert(1000000);

Thai uses native grouping words such as หมื่น, แสน, and ล้าน, which is why a locale-aware library is more reliable than generic English-first number formatters.

Currency - Baht / Satang

tw.convert(1234.56, { currency: true });
tw.convert('800.00', { currency: true, includeZeroFractional: true });

Ordinal Numbers

tw.toOrdinal(1);
tw.toOrdinal(9);
tw.toOrdinal(10000);

Locale Codes

Locale code	Country	Currency	Notes
th-TH	Thailand	Baht / Satang	Native Thai wording for currency, cardinals, and ordinals

Related

• Currency guide
• Vietnamese
• All locales

FAQ

Q: Which locale code should I use for Thai number words? Use th-TH.

Q: Does to-words handle Thai currency output too? Yes. th-TH supports Thai Baht and Satang wording via the same currency API used elsewhere in the library.