What is the difference between cardinal and ordinal numbers?

Cardinal numbers express quantity (one, two, three) and answer 'how many'. Ordinal numbers express position or rank (first, second, third) and answer 'which one in a series'. This tool supports both: cardinal for counting and ordinal for rankings, lists, and positions.

Can I use this tool to write checks or legal documents?

Yes! Writing out numbers in words is required on checks and in many legal documents to prevent fraud. For example, $1,234.56 becomes 'One thousand two hundred thirty-four dollars and fifty-six cents'. Use the Currency mode for this purpose.

What is the largest number this tool can convert?

The tool supports numbers up to 999 quadrillion (999,999,999,999,999). For most practical purposes — including financial documents, invoices, and everyday text — this range covers all typical use cases.

Does the tool support decimal numbers?

Yes. For cardinal mode, decimals are read digit by digit after 'point' (e.g., 3.14 becomes 'Three point one four'). For currency mode, decimals are treated as cents or pence (e.g., 10.50 USD becomes 'Ten dollars and fifty cents').

Is the output capitalized?

Yes, the first letter of the output is always capitalized. This makes it ready to use at the beginning of a sentence or in a formal document.

数字を単語に変換

数字を英語の単語に変換します。基数詞、序数詞、複数通貨の金額表現に対応しています。

数字

使い方

数字を英語の単語に変換します。基数詞、序数詞、複数通貨の金額表現に対応しています。

1Enter any number in the input field (integers or decimals).
2Select the conversion mode: Cardinal, Ordinal, or Currency.
3For Currency mode, choose your currency (USD, EUR, GBP, etc.).
4The result appears instantly in English words.
5Click 'Copy to Clipboard' to use the result in your document.

主な機能

Three conversion modes: cardinal, ordinal, and currency
Supports numbers up to 999 quadrillion
Currency mode for checks and legal documents (USD, EUR, GBP, JPY, KRW)
Decimal support — read digit by digit or as cents
Instant conversion with copy to clipboard

よくある質問

詳しく読む

Number to Words Converter: Write Out Numbers in English