Polish Number to Words in JavaScript (pl-PL)

Use pl-PL when you need Polish wording for invoices, cheque-style output, legal decimals, or UI copy where grammatical forms matter.

Locale codes: pl-PL · Numbering system: European long scale · Currency: Złoty / Grosz · Script: Latin

Install

npm install to-words

Basic Conversion

import { ToWords } from 'to-words';

const tw = new ToWords({ localeCode: 'pl-PL' });

tw.convert(10); // "Dziesięć"
tw.convert(137); // "Sto Trzydzieści Siedem"
tw.convert(1000000);

Currency - Zloty / Grosz

tw.convert(1234.56, { currency: true });
tw.convert('400.00', { currency: true, includeZeroFractional: true });

Gender and Fraction Style

tw.convert(1, { gender: 'feminine' });
tw.convert(2, { gender: 'feminine' });
tw.convert(0.25, { decimalStyle: 'fraction' });

Polish supports gender-aware forms and Slavic fraction rules, which is important for banking and legal-style phrasing.

Ordinal Numbers

tw.toOrdinal(1);
tw.toOrdinal(12);
tw.toOrdinal(1000000);

Locale Codes

Locale code	Country	Currency	Notes
pl-PL	Poland	Złoty / Grosz	Supports ordinals, fraction-style decimals, and gender-aware forms

Related

• Russian
• Cheque printing
• Currency guide

FAQ

Q: Does pl-PL support Polish legal decimal wording? Yes. Use decimalStyle: 'fraction' for formal decimal output.

Q: Can I apply feminine forms in Polish? Yes. pl-PL supports gender-aware conversion with gender: 'feminine' where the locale defines it.