Number to Words Converter
Convert numbers to words in English quickly and accurately. Type any whole number and get it spelled out in full, ideal for writing checks, invoices, contracts and academic work.
What does writing a number in words mean?
Writing a number in words means representing it with words instead of digits. For example, the number 123 is written as "one hundred twenty-three", and 1,200,000 as "one million two hundred thousand".
How to convert a number to words
- Type the number.
- Click Convert to words.
- See the number spelled out in full.
- Copy it if you need to.
Rules for writing numbers in words in English
- Hyphens: compound numbers from 21 to 99 take a hyphen, as in "twenty-one" or "ninety-nine".
- No plural scales: "hundred", "thousand" and "million" stay singular after a number: "two hundred", "five million".
- "And" is optional: American English usually writes "one hundred twenty-three", while British English adds "and": "one hundred and twenty-three".
- No commas needed: groups are simply written in order, from the largest to the smallest, as in "three thousand four hundred five".
When to write numbers in words
- Writing checks (cheques), where the amount must appear in words
- Invoices, receipts and promissory notes
- Contracts and legal documents
- Academic and formal writing
- Preventing mistakes or fraud in amounts
TIP: Always double-check the amount in words on important documents, especially financial ones, to avoid inconsistencies.
Frequently asked questions
How do I write a number in words?
Type the number and it appears spelled out in English. For example, 123 becomes one hundred twenty-three.
What is the largest number the tool can convert?
Up to the quadrillions, that is, numbers with up to 18 digits.
Should I use “and” when writing numbers in words?
In American English, “and” is usually left out: one hundred twenty-three. In British English it is common to add it after hundred: one hundred and twenty-three. Both are correct.
Do you write “thousand” or “one thousand”?
In English the number before the scale word is always written: 1,500 is one thousand five hundred, and the scale word never takes an “s”: two thousand, not two thousands.