Number to Words Calculator

This calculator spells a whole number out in plain English, the way you would write it on a cheque, in a legal contract, or when teaching a child how place value works. Type any whole number into the box, including a negative number if needed, and the calculator instantly converts it into words, correctly grouping the digits into hundreds, thousands, millions, billions, trillions and up to the quadrillions using the short scale standard in New Zealand and most English-speaking countries. Alongside the words, you get the number of digits in your figure and the same value shown with comma separators, so you can quickly check you have typed the right number before copying the words across. Compound tens such as thirty-four are joined with a hyphen, matching standard written English, and a negative number is prefixed with the word negative rather than a minus sign. The calculator accepts any whole number up to 999,999,999,999,999, anything larger is outside its range. Try the default value of 1234 to see it become one thousand two hundred thirty-four, or enter 1000000 to see one million, then swap in your own figure for a cheque amount, a contract sum, an invoice total or a maths lesson on how digits translate into spoken and written language.

Whole number

One thousand two hundred thirty-four

Number of digits4

Value1,234

The formula

The number is split into groups of three digits from the right. Each group is read as hundreds and tens and ones, then labelled thousand, million, billion and so on, using the short scale.

Worked example

1234 becomes one thousand two hundred thirty-four. The number 1000000 becomes one million. Enter 1234 to confirm.

Frequently asked questions

How high can it go?

Up to the quadrillions, that is numbers below one thousand trillion.

Does it use the short scale?

Yes, the short scale standard in New Zealand, where a billion is a thousand million.

Are negative numbers handled?

Yes, they are prefixed with the word negative.

Who this calculator is for

This calculator is for anyone writing cheques, contracts or invoices, and for teaching place value.

What this calculator assumes

You enter a whole number up to the quadrillions.
The short scale naming is used.
Hyphens join compound tens such as thirty-four.

Formula and sources

Related calculators

Prime Factorization Calculator: break a number into prime factors.
LCM Calculator: lowest common multiple.
GCF Calculator: greatest common factor.

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