Number to words converter
This converter spells a number the way it is read in English, handy for contracts, invoices and learning number names.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter number and style.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
The number is split into groups of three digits from the right. Each group is read as hundreds, tens and ones, then its scale word: thousand, million, billion and so on. UK style adds "and" before the tens and ones, and digits after the decimal point are read one by one after "point".
Example
Inputs: Number = 1234, Style = US (one hundred five). Result: In words: one thousand two hundred thirty-four; Formatted number: 1,234.
Limits and caveats
- We use the short scale, so a billion is a thousand million, as in modern English.
- Up to 21 digits before the decimal point; trailing zeros after the point are dropped.
Questions about this tool
What is the difference between US and UK style?
US style writes 125 as one hundred twenty-five, while UK style adds "and": one hundred and twenty-five. Both are correct.
How are decimals written?
Digits after the point are read one at a time after "point", so 3.05 becomes three point zero five.
When do I use a hyphen?
Only between tens and ones from 21 to 99, as in forty-two. There is no hyphen after hundred or thousand.