How to use the numbers to words converter
Type the number without a currency symbol. Commas aren't needed, and you can enter decimals, a minus sign or scientific notation like 1.2e6. The tool reads your input as text, so long numbers stay exact.
The currency and check settings only appear when you choose a mode that needs them.
- Enter the number.
- Pick the output format: standard words, currency words, check writing, ordinal, expanded place value or read each digit.
- Choose international (million, billion) or Indian (lakh, crore) numbering, and US or British style.
- For checks, pick the currency, whether to print its name, and an ending of only, exactly or nothing.
- Set the letter case and whether to hyphenate numbers like twenty-one, then copy the result.
Write a check amount in words
Choose Check writing and the tool puts the whole amount in words and the cents as a fraction. Most U.S. checks already print DOLLARS at the end of the line, so you can switch the currency name off to avoid writing it twice.
Words beat figures. Under the Uniform Commercial Code, if the written amount and the number in the box disagree, the words win. So check the words against the figure before you sign, and draw a line through the leftover space so nobody can add to it.
| Amount | Settings | Written on the check |
|---|---|---|
| $236.79 | Currency name off, no ending | Two hundred thirty-six and 79/100 |
| $1,250.50 | USD, only | One thousand two hundred fifty dollars and 50/100 only |
| $5,075.62 | USD, only | Five thousand seventy-five dollars and 62/100 only |
| $1,500.00 | USD, exactly | One thousand five hundred dollars and 00/100 exactly |
| $40.00 | USD, only | Forty dollars and 00/100 only |
Examples in every format
The same number reads differently depending on the format. Here's what each mode gives you.
| Input | Mode | Result |
|---|---|---|
| 12345.67 | Standard words | Twelve thousand three hundred forty-five point six seven |
| 12345.67 | Currency, USD | Twelve thousand three hundred forty-five dollars and sixty-seven cents |
| 12.5 | Decimal fraction words | Twelve and five tenths |
| 21 | Ordinal | Twenty-first |
| 4305 | Expanded place value | Four thousand + three hundred + five |
| 507 | Read each digit | Five zero seven |
| -0.75 | Standard words | Negative zero point seven five |
How the conversion works
The tool splits the whole number into groups of three digits from the right. Each group becomes words from one to nine hundred ninety-nine, then gets its scale name: thousand, million, billion and so on. In Indian numbering, the last three digits stay together and the rest are grouped in pairs for lakh, crore and up.
Because the digits are never turned into an ordinary computer number, a value like 9007199254740993 isn't rounded. It comes out as nine quadrillion seven trillion one hundred ninety-nine billion two hundred fifty-four million seven hundred forty thousand nine hundred ninety-three.
12,345 = (12 x thousand) + 345 = twelve thousand three hundred forty-five1,25,000 (Indian) = (1 x lakh) + 25 thousand = one lakh twenty-five thousand
US and British "and"
American usage usually leaves "and" out of whole numbers, saving it for the decimal point or the cents. So 101 is one hundred one. British English puts it in: one hundred and one.
Pick the style your reader expects. For U.S. checks, keep the US setting so the only "and" sits right before the cents.
Words to numbers
This tool goes one way, from figures to words. To turn words back into a number, write each scale group on its own. "Three million forty thousand six" is 3 million, 40 thousand and 6, which is 3,040,006. Fill any missing group with zeros.
A quick way to check your work is to paste the number you got back into the converter and see if the words match the ones you started with.
Limits and when to double-check
International names run up to 306 whole-number digits (centillion range). Indian names go up to 21 digits (mahashankh). Names for huge scales vary between references.
Currency and check modes round to the currency's smallest unit: two decimals for most, none for yen, won and dong, and three for several dinars and the Omani rial. Other modes don't round. For contracts and payments, compare the words with the original figure before you send anything.
Sources
These references cover check writing, the words-over-figures rule and the number formatting standards behind this tool.