Number to Words Converter

Spell out a number in English words — useful for cheques and contracts. Enter a number.

In Words
—
Written out.

Usage Tip

On a cheque, write the words to match the figures exactly; the words are what legally counts if the two disagree.

THE MATH
Grouped in threes and named by scale: thousand, million, billion
Decimals are read digit by digit after the point
Numbers are written in words on cheques and legal documents to prevent alteration.
English groups digits in threes, each group named by its scale.
Whole numbers up to the quadrillions are supported.
Decimals are read digit by digit after the word point.
Negative numbers are prefixed with the word negative.
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