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Number to Words

Type a number to see it in words, or switch to the amount mode for dollars and cents, as written on a check. The calculator reads 1,500.75 and 1500.75 alike, and shows what it understood.

In words

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How numbers are written in words

Numbers from 21 to 99 take a hyphen (twenty-one, ninety-nine), and nothing else does. Thousand, million and billion never take an s after a number: two thousand, five million. American English leaves out the "and" after hundred, so 101 is one hundred one; British English writes one hundred and one, and both are correct where they are used.

On a check, the dollars are written in words and the cents usually as a fraction of 100: one thousand five hundred and 50/100 dollars. The amount mode here writes the cents out in full too, which is what a contract or a receipt asks for.

Everyday speech has a shortcut that formal writing avoids: 1,500 is often said fifteen hundred. It is correct in conversation, but on a check or in a contract the full form, one thousand five hundred, is the one that cannot be misread.

Frequently asked questions

Do you write "and" in numbers like 101?

In American English, no: one hundred one. In British English, yes: one hundred and one. On an American check the "and" is kept for the cents: one hundred one and 25/100 dollars.

Is it "two thousand" or "two thousands"?

Two thousand. After a number, thousand, million and billion stay singular. The plural only appears without a number in front: thousands of people.

How large can the number be?

Up to 999,999,999,999, just under a trillion. Larger amounts are rare outside public budgets, and every language here names them differently.

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