How are the currency names pluralised?

The unit is singular for exactly one and plural otherwise. Euro gives um euro and dois euros; real gives um real and dois reais, with the irregular plural reais. The cents follow the same rule: um cêntimo and cinquenta cêntimos for the euro, um centavo and noventa centavos for the real.

When does the word de appear before the currency?

Portuguese inserts de before the noun when the amount ends on a bare million or billion, as in um milhão de reais or dois milhões de euros. When smaller groups follow, the de is dropped: um milhão e quinhentos mil reais. The tool applies this automatically.

What decimal and grouping formats are accepted?

You can write the amount in the European style 1.234,56 with a dot for thousands and a comma for decimals, or in the plain style 1234.56 or 1234,56. The tool detects the decimal mark as the last separator followed by one or two digits and ignores grouping separators, so both conventions work.

What is the difference between euro and real spelling?

Beyond the currency names, the euro option defaults to European Portuguese number spelling (dezasseis, mil milhões) and the real option defaults to Brazilian (dezesseis, bilhão). You can override the spelling with the toggle, for example to write euro amounts in Brazilian Portuguese.

Is this suitable for cheques and contracts?

Yes. Writing the amount in words is standard practice on cheques, promissory notes, and contracts in Portuguese-speaking countries to prevent tampering. Always proofread the generated text against the figures, since legal documents require an exact match between the numeric and written amounts.

Portuguese Currency in Words

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This tool writes a money amount in Portuguese words (por extenso), the form used on cheques, contracts, and invoices. It supports the euro with cêntimos for European Portuguese and the Brazilian real with centavos, and applies the gender, plural, and connector rules correctly.

How it works

The amount is split into a whole part and a two-digit cents part. Each part is spelled out with the standard number rules (um/uma, cem/cento, the internal e connectors), then joined to the currency name:

1.234,56 €  -> mil duzentos e trinta e quatro euros e cinquenta e seis cêntimos
99,90 R$    -> noventa e nove reais e noventa centavos
1,00 R$     -> um real
1.000.000 R$-> um milhão de reais

The currency name is singular for exactly one unit and plural otherwise, and the two parts are joined with e. When the whole amount ends on a round million or billion, the connector de is inserted before the noun.

Notes and tips

Decimals can be written with a comma (1.234,56) or a dot (1234.56); the tool detects the decimal mark and treats other separators as grouping. The euro option defaults to European Portuguese spelling and the real to Brazilian, matching where each currency is used, but the toggle lets you mix them if your document requires it. For legal documents, always confirm that the written amount matches the figures exactly before signing.