Type a number and the tool writes it out in words: 1500 becomes “one thousand five hundred”, and 1500.50 with cents becomes “one thousand five hundred with fifty cents”. It is handy for cheques, invoices, contracts and any document where the amount must also be written in letters.
Choose American style (“one hundred twenty-three”) or British style (“one hundred and twenty-three”), add the cents, or switch to capitals. It runs in your browser, so nothing is uploaded.
What it converts and how far it goes
It converts whole numbers from zero up to 999,999,999,999 (nine hundred ninety-nine billion and so on), negative numbers (“minus”) and decimals. Commas and spaces as thousand separators are ignored, and a dot or a comma followed by one or two digits is read as the decimal part.
The writing rules it applies
Tens and units from 21 to 99 are joined with a hyphen: “twenty-one”, “ninety-nine”. Thousands, millions and billions are named in order, and the word “and” is only added in British style, after the hundreds. A decimal part is read digit by digit: 3.25 is “three point two five”.
For cheques, contracts and minutes
Writing the amount in words protects a document against changes and misreadings: if the figures and the words disagree, the words usually prevail. The tool gives only the number, without the currency name, so add “dollars”, “pounds” or “euros” yourself.
How to use it
- 1Type the number with or without separators: 1500, 1,500 or 1 500.
- 2Pick the style and tick “With cents” if the decimals are an amount of money.
- 3Copy the text from the result box.
Examples with each option
| Input | Option | Result |
|---|---|---|
| 1500 | American | one thousand five hundred |
| 123 | British | one hundred and twenty-three |
| 1500.50 | With cents | one thousand five hundred with fifty cents |
| 3.05 | default | three point zero five |
Limitations
The result has no currency name. Numbers above 999,999,999,999 are rejected. Words for very large values use the short scale (billion = one thousand million). Review the text before putting it in a legal document.
Frequently asked questions
How do I convert a number to words?
Type the number in the box. The words appear below at once, ready to copy.
Can I convert amounts with decimals or cents?
Yes. Tick “With cents” to read the decimals as cents, as in “with fifty cents”. Without it, decimals are read digit by digit.
What is writing a number in words useful for?
Cheques, contracts, invoices, official forms and minutes, where the amount must be written in letters as well as figures.
What is the largest number I can convert?
999,999,999,999.
What is the difference between American and British style?
British style adds “and” after the hundreds: “one hundred and twenty-three”. American style leaves it out.
Can I get the result in capitals?
Yes. Tick “In capitals”.
Why does the result not say “dollars”?
The tool only writes the number. Add the currency name yourself to match your document.
How are big numbers written?
In groups: thousand, million and billion, each preceded by the words for its group.