How to Write a Check Amount in Words (Without Getting the Cents Wrong)

Q: Do you write 'and' between the hundreds and the tens?

Standard American usage skips 'and' between the hundreds and tens digits: 123 is written 'one hundred twenty-three', not 'one hundred and twenty-three'. The word 'and' is reserved for the point between the whole-dollar words and the cents fraction, as in 'One hundred twenty-three and 45/100 Dollars'.

Q: Why do some checks use ALL CAPS and the word 'Only'?

Writing the amount in ALL CAPITAL LETTERS and adding 'Only' at the end (e.g. 'ONE HUNDRED AND 00/100 DOLLARS ONLY') are traditional safeguards against alteration: capital letters are harder to alter convincingly, and 'Only' signals that no further amount should be added after the written figure. Neither is legally required in the US, but both remain common practice.

Filling out a check by hand still trips people up on one line: the written-out amount. Get the cents fraction wrong, add an extra "and," or forget the "00/100," and the check can bounce back or look suspicious to a bank teller. Here's the exact American convention, plus a free converter that does it instantly.

Spelling out the whole-dollar amount

Quick answerSplit the number into groups of three digits from the right and read each group from largest to smallest — thousand, million, billion, and so on — with no "and" between the hundreds and the tens. 1,234 → "one thousand two hundred thirty-four."

This is the core of any number-to-words conversion: a dollar figure like $1,234 isn't read digit by digit, it's grouped in threes and each group gets its own scale word. The hundreds place inside a group never takes "and" before the tens — so it's "one hundred twenty-three," not "one hundred and twenty-three." That's a common point of confusion for anyone used to British usage, where the "and" is kept.

Compound numbers from 21 to 99 (other than exact multiples of ten) get a hyphen: twenty-one, forty-five, ninety-nine. Numbers under 20, and exact tens like thirty or eighty, are single words with no hyphen. A converter that gets this right handles amounts well past a million — a tool like ToolPico's number to words converter spells out figures up to 999 quintillion, which covers every realistic check, invoice, or loan document.

Writing the cents correctly

Quick answerCents are never spelled out as words — they're written as a two-digit fraction over 100, right after "and": $12.05 → "Twelve and 05/100 Dollars." Even with no cents, write "00/100" rather than leaving it blank.

The XX/100 fraction is the near-universal format on American checks and promissory notes. It's faster to write than spelling "cents" out in words, and it sits right after the dollar amount where a bank teller expects to find it. As a worked example (illustrative only, not a real transaction): a check for $1,234.56 reads "One thousand two hundred thirty-four and 56/100 Dollars."

Example amounts and their written form (illustrative)
Amount	Written in words
$0.99	Zero and 99/100 Dollars
$45.00	Forty-five and 00/100 Dollars
$1,234.56	One thousand two hundred thirty-four and 56/100 Dollars
$25,000.00	Twenty-five thousand and 00/100 Dollars

Always write "00/100" even for a whole-dollar amount — leaving that space blank makes it easier for someone to alter the check after it's signed.

Why the words matter more than the numerals

Quick answerUnder the Uniform Commercial Code (UCC Section 3-114), if the written amount and the numeral amount on a check disagree, the words control — not the digits.

That single rule is the whole reason the written-amount line exists. Numerals in a box (like "$1,234.56") are quick to alter with a stray pen stroke; a fully spelled-out phrase is much harder to tamper with convincingly. If you ever discover a mismatch between the two amounts on a check you're depositing or writing, the words are the legally controlling figure in the US — which is exactly why it pays to get them right before you sign.

Promissory noteA written promise to pay a specific sum, which — like a check — states the amount in both figures and words for the same reason: the words are harder to alter and control if there's a conflict.

ALL CAPS, "Only," and asterisks — do you need them?

Quick answerNone of these are legally required, but all three remain common handwriting safeguards: ALL CAPS is harder to alter convincingly, "Only" signals nothing more should follow the figure, and asterisk fill closes off blank space on the line.

A converter that supports these as toggles — rather than making you retype the whole phrase in capitals by hand — saves time on a stack of checks or notes. For example, "ONE HUNDRED AND 00/100 DOLLARS ONLY" or an asterisk-filled version like "**One Hundred and 00/100 Dollars**" are both still standard on business checks even though modern check printing has made outright alteration much rarer than it once was.

ToolPico's number to words converter also supports a "plain number" mode with no currency name or cents fraction — useful for spelling out a figure in a legal document, form field, or word-problem answer — plus 10 currencies (USD, EUR, GBP, JPY, INR, CAD, AUD, CHF, CNY, MXN) if you need the written amount in something other than dollars.

Skip the manual spelling-out

Type any dollar amount and get the correct check-writing phrase instantly — cents fraction, hyphenation, and capitalization handled for you.

Try the free Number to Words Converter →

Frequently asked questions

How do you write a dollar amount in words on a check?

Spell out the whole-dollar amount in words, then add the cents as a fraction over 100, and end with the word "Dollars". For example, $1,234.56 is written "One thousand two hundred thirty-four and 56/100 Dollars". This format leaves no easy room to alter the amount and is the standard used on checks and promissory notes in the United States.

How do you write cents in words on a check?

Cents are not spelled out as words; they are written as a two-digit fraction over 100, right after the word "and". For example, 56 cents is written "56/100", and $12.05 becomes "Twelve and 05/100 Dollars". If there are no cents, write "00/100" rather than omitting the fraction, e.g. "Two million and 00/100 Dollars".

Do you write "and" between the hundreds and the tens?

Standard American usage skips "and" between the hundreds and tens digits: 123 is written "one hundred twenty-three", not "one hundred and twenty-three". The word "and" is reserved for the point between the whole-dollar words and the cents fraction, as in "One hundred twenty-three and 45/100 Dollars".

What happens if the written amount and the numeric amount on a check disagree?

Under the Uniform Commercial Code (UCC Section 3-114), if the amount written in words and the amount written in figures on a check conflict, the words control. This is exactly why the amount is always spelled out in full on checks and promissory notes.

Why do some checks use ALL CAPS and the word "Only"?

Writing the amount in ALL CAPITAL LETTERS and adding "Only" at the end (e.g. "ONE HUNDRED AND 00/100 DOLLARS ONLY") are traditional safeguards against alteration: capital letters are harder to alter convincingly, and "Only" signals that no further amount should be added after the written figure. Neither is legally required in the US, but both remain common practice.

A note on accuracy: The examples above are illustrative only and not drawn from any real transaction. This guide and the linked converter are for informational purposes and are not legal or financial advice — always double-check that the written amount matches the numeric amount before signing a check or promissory note.