Number to Words Converter
Convert numbers to words instantly. Transform any number into its written form. Perfect for checks, invoices, legal documents, and any situation where you need numbers written out in words.
Enter any integer. You can use commas (e.g., 1,234,567). Decimal numbers will be rounded to the nearest integer.
Standard: one thousand two hundred thirty-four · Title Case: One Thousand Two Hundred Thirty-Four · Sentence: One thousand two hundred thirty-four · ALL CAPS: ONE THOUSAND TWO HUNDRED THIRTY-FOUR
Table of Contents
What is a number to words converter?
A number to words converter is a tool that transforms numeric values into their written
word form. For example, the number 1234 becomes "one thousand two hundred thirty-four".
This is commonly needed for:
- Checks: Writing out dollar amounts in words
- Legal documents: Specifying numbers in contracts and agreements
- Invoices: Including written amounts for clarity
- Academic writing: Following style guides that require numbers in words
- Accessibility: Making numbers more readable for some users
How it works
The number to words converter works by:
- Parsing the input: Validates that the input is a valid number and converts it to a numeric value.
- Handling decimals: Decimal numbers are automatically rounded to the nearest integer since the converter works with whole numbers.
- Converting to words: Uses a proven algorithm to convert the number into its written form, handling place values (ones, tens, hundreds, thousands, etc.).
- Formatting: Outputs the result in proper English word format with correct hyphenation and spacing.
The converter supports numbers from -9007199254740991 to 9007199254740991 (JavaScript's safe integer range).
Common use cases
- Writing checks: Convert dollar amounts to words for check writing (e.g., "One thousand two hundred thirty-four dollars").
- Legal documents: Include numbers in written form in contracts, agreements, and legal papers to prevent ambiguity.
- Invoices and receipts: Add written amounts alongside numeric values for clarity and professionalism.
- Academic writing: Follow style guides (like APA, MLA, or Chicago) that require certain numbers to be written out.
- Accessibility: Make numbers more readable for users who prefer written text over numeric values.
- Creative writing: Use written numbers in stories, scripts, or other creative content.
Frequently asked questions
The converter supports numbers from -9,007,199,254,740,991 to 9,007,199,254,740,991 (JavaScript's safe integer range). This covers virtually all practical use cases.
Decimal numbers are automatically rounded to the nearest integer. For example, 123.7 becomes 124 and is converted to "one hundred twenty-four". If you need precise decimal handling, you may need to convert the integer and decimal parts separately.
Yes! Negative numbers are supported. For example, -1234 becomes "minus one thousand two hundred thirty-four".
Yes, you can convert the numeric amount and then add the currency name. For example, 1234 becomes "one thousand two hundred thirty-four", and you can add "dollars" or your preferred currency unit.
No. Everything runs locally in your browser. Your number never leaves your device.