Number to Words Converter
Spell any number out in words — for checks, legal documents, invoices, or teaching place value. The check mode formats cents the way banks expect them.
In words
One thousand two hundred thirty-four point fifty-six
Uses US (short-scale) naming — a billion is 10⁹. On checks, the “xx/100” fraction form is the banking convention for cents, and drawing a line through leftover space prevents anyone amending the amount.
Writing Numbers Correctly
On a check, the written words are legally the controlling amount — if the numerals box says $1,250 but the line says “one thousand twenty-five dollars,” the bank honors the words (UCC §3-114). Hyphenate compound numbers from twenty-one to ninety-nine, write cents as a fraction over 100, and draw a line through unused space so nothing can be added.
Examples
$1,234.56 → One thousand two hundred thirty-four
and 56/100 dollars
$50.00 → Fifty and 00/100 dollars
$0.99 → Zero and 99/100 dollars
747 → seven hundred forty-seven
1,000,000 → one million (no "and" before the tens)Frequently Asked Questions
How do I write $1,500 on a check?
On the amount line: 'One thousand five hundred and 00/100 dollars,' then draw a line through the remaining space. The word 'dollars' is usually pre-printed at the end of the line, so you can stop at '00/100'. The numerals box gets 1,500.00.
Does 'and' belong in a number like one hundred five?
In formal US style, no — 'and' is reserved for the decimal point or cents, so 105 is 'one hundred five' and $105.50 is 'one hundred five and 50/100.' British usage happily says 'one hundred and five,' which is why you'll see both in the wild.
What if the words and numerals on a check disagree?
The written words legally control — under UCC §3-114, words outrank numerals when an instrument is ambiguous. Banks will typically pay the worded amount or bounce the check back for clarification, which is exactly why getting the words right matters more than the box.
Is a billion always a thousand million?
In modern English yes — the 'short scale,' where each name steps by ×1,000. The older 'long scale,' still used in many European languages, makes a billion a million million. This converter uses the short scale: thousand, million, billion (10⁹), trillion (10¹²).