Number to Words Converter
Convert numbers to English words and back. Supports up to quadrillions, negative numbers, and currency mode.
Quick examples
Convert any integer up to 999 quadrillion into English words, or convert written English numbers back into digits. Supports negative numbers, optional currency mode (appends "dollars"), and quick example buttons for instant testing.
Key Features
Number → Words
Converts any integer from -999,999,999,999,999 to 999,999,999,999,999 into correctly phrased English words including thousands, millions, billions, and trillions.
Words → Number
Parse written English numbers like "one million two hundred thirty-four" back into a numeric value.
Currency mode
Enable currency mode to append "dollars" to the output — useful for writing checks, invoices, or financial documents.
Quick examples
Click preset example numbers to instantly test the conversion without typing.
How to Use
- 1Select "Number → Words" or "Words → Number" mode.
- 2Type a number or written words in the input field.
- 3The result appears instantly below.
- 4Toggle currency mode to add "dollars" to the output.