Number to Words Converter

What is number to words converter?

Writing an amount in words is required on cheques, invoices, contracts and school exercises. It prevents mistakes, since digits are easy to alter but words are not.

The tool follows standard British style, with and after hundreds, and reads decimals digit by digit.

How to use the number to words converter

1. Type your number. Commas are allowed.
2. Read the words in the result box.
3. Press the copy button to paste it into your document.

How the number to words converter works

The number is split into groups of three digits. Each group is written out as hundreds, tens and ones, and followed by a scale word such as thousand, million or billion.

Worked example

Common uses of the number to words converter

• Writing the amount in words on a cheque or invoice.
• Preparing legal documents, receipts and contracts.
• Helping children learn how to read big numbers.
• Proofing figures in reports and articles.
• Creating accessible text for screen readers.

Tips and common mistakes

For currency, write the words for the whole part and add the currency name and cents as your form requires.

Check the result against the digits one more time on legal documents.

Background: what to know before you rely on it

Writing numbers in words is a safeguard against fraud and error. A digit can be altered easily, but a number written out in full is much harder to change. That is why cheques and legal documents ask for both. English uses a short scale, where a billion is a thousand millions. Older British usage had a long scale, where a billion was a million millions, which is why very old texts can confuse. Style guides differ on the use of and, for example one hundred and five in British English versus one hundred five in American English. This tool uses the British style.

Private, free and fast

This tool runs entirely in your browser. What you type or choose is not uploaded to a server and is not saved after you close the page, which keeps it fast and private. It is free to use as often as you like. See more in all converters, or browse the full list of tools.

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Results are for information and education. For legal, financial, medical or security decisions, check with a qualified professional. Check critical conversions with an official source.