How to Write a Check Amount in Words (With Cents, Zeros, and Cents Under $1)

You know the number. It’s $123.45, and it’s already in the little box. The long line underneath is where people stall: is it “one hundred and twenty-three”? Do you write “cents”? What goes there when there are no cents at all? The whole convention is one pattern: the dollars in words, the word “and”, then the cents as a fraction over 100, so $123.45 is “One hundred twenty-three and 45/100”. The word “and” appears exactly once, and it stands for the decimal point. That single rule settles most of the disagreement you’ll find online.

Below: the pattern, six worked examples, the reason “and” is reserved, what to do with round dollars and amounts under a dollar, and what the law says when the words and the numerals don’t match. Every example line was produced by the check mode of our number to words converter, and the rules were checked against bank guidance and the statute itself.

The pattern

<dollars in words> and <cents as two digits>/100

$123.45  ->  One hundred twenty-three and 45/100

Three details make it work:

• Cents are always two digits. Seven cents is 07/100, not 7/100. No cents is 00/100.
• Hyphenate twenty-one through ninety-nine. “Twenty-three”, “forty-five”, “ninety-nine”. That’s ordinary English spelling for compound numbers, and it keeps “twenty three” from reading as two separate words.
• Start at the far left and draw a line to the end. Bankrate and PNC both say to fill the unused space after the words with a line so nobody can add to them. PNC also says to start the numeral box at its far left edge, for the same reason.

Six worked examples

These cover every case you’ll actually meet: round dollars, cents, a single-digit cent value, thousands, and an amount under a dollar.

Numeral box	Written line
$123.45	One hundred twenty-three and 45/100
$1,000.00	One thousand and 00/100
$0.75	Zero and 75/100
$7.07	Seven and 07/100
$2,500.50	Two thousand five hundred and 50/100
$15.00	Fifteen and 00/100

Notice what’s missing. There’s no “and” between “one hundred” and “twenty-three”, no comma after “thousand”, and no word “cents” anywhere. The fraction does the job of the cents, so writing “and forty-five cents” as well would say the same thing twice.

Why “and” only goes at the decimal point

In everyday British and much spoken American English, people say “one hundred and twenty-three”. On a check that habit causes trouble, because the line already has an “and” doing a specific job. Compare:

One hundred twenty-three and 45/100           (correct: one "and", at the decimal)
One hundred and twenty-three and 45/100       (two "and"s: which one is the point?)

A human can usually work out the second one. But the convention exists so nobody has to work anything out. One “and” means one possible split between dollars and cents. Bankrate’s own examples follow it (“One thousand two hundred fifty and 75/100”), and so does the Bates College check-writing guide (“four hundred ten and 00/100”).

The same logic is why “and” never appears inside a thousands group. $2,500.50 is “Two thousand five hundred and 50/100”, not “Two thousand and five hundred and 50/100”.

Round dollars: write the 00/100

When there are no cents, it’s tempting to stop at “Fifteen”. Don’t. Bankrate says to include “00/100” even for round amounts, because it makes it harder for someone to add cents afterward. The Bates guide gives the same instruction.

PNC also accepts “no/100” (“Fifty dollars and no/100”). It means the same thing. Pick one and use it every time; 00/100 matches the two-digit rule above.

”Dollars” or not?

PNC’s examples include the word “dollars” (“Fifty dollars and 25/100”), while Bankrate’s leave it out. Look at your checkbook before deciding. Most personal checks have the word DOLLARS already printed at the right end of the amount line, so writing it again adds nothing. Your words, then a line drawn across to the printed DOLLARS, is the cleanest version. If your check has nothing printed there, adding “dollars” yourself is fine.

Cents under a dollar

For a check under a dollar, the dollar part is still written out. It’s just zero:

Numeral box	Written line
0.75	Zero and 75/100
0.05	Zero and 05/100

PostGrid’s guide to small checks gives the same format (“Zero and 50/100” for 50 cents) and says to put a 0 before the decimal point in the box, so it reads 0.75 rather than .75. A bare .75 is easy to misread, or to turn into 9.75 with one stroke. The leading zero closes that gap the same way the line after the words does.

When the words and the numerals disagree

Say the box reads $150.00 and the line reads “One hundred five and 00/100”. Which one counts?

The Uniform Commercial Code, the model commercial law that US states enact as their own statutes, answers this directly. UCC § 3-114, titled “Contradictory Terms of Instrument”, reads in full:

If an instrument contains contradictory terms, typewritten terms prevail over printed terms, handwritten terms prevail over both, and words prevail over numbers.

So under the statute, the words control. That’s the reason the written line exists at all: digits are easier to misread or alter than a full spelled-out amount. The same section also ranks handwriting above typing and typing above preprinted text.

That doesn’t mean a mismatch is harmless. Bankrate says a mismatch between the words and the numerals can cause the bank to reject or delay the check. The practical rule is simple: make them agree before you sign, and if you get one wrong, start over with a fresh check rather than correcting it.

A quick checklist

1. Numerals in the box, starting at the far left, always with two decimal places (15.00, 0.75).
2. Dollars in words, hyphenated from twenty-one to ninety-nine, no “and” inside the dollar part.
3. One “and”, then the cents as two digits over 100.
4. 00/100 when there are no cents. “Zero” when there are no dollars.
5. A line from the end of your words to the end of the space.
6. Read the words and the box against each other once before you sign.

Getting the words without thinking

For a big or awkward number (say $14,392.08), it’s easy to drop a “thousand” or a hyphen. Type the amount into the number to words converter and switch to Check mode. It prints the line in exactly the format above, in sentence case by default (“Fourteen thousand three hundred ninety-two and 08/100”), with options for UPPER CASE, Title Case, and the “only” suffix some people add at the end. It rounds to the nearest cent if you type more decimals, so 19.999 becomes “Twenty and 00/100”. The same tool also spells amounts out in currency style (“one hundred twenty-three dollars and forty-five cents”) if you need the long form for a contract or a receipt.

The tool’s British “and” checkbox, for general number spelling, is hidden in Check mode, so it can’t produce the double-”and” line this post warns against.

If you’re the one getting paid, the invoice generator builds the bill with line items, tax and a total you can export as a PDF, so the amount your client writes on the check matches the one you asked for. Billing by the hour? Total the week in the time card calculator first, and it hands you decimal hours ready for a line item. And if what you actually need is a number in another notation, the Roman numeral converter handles 1 to 3999 in both directions.