Number to Words Converter
Convert numbers to words and currency in words
Supports integers, decimals, and scientific notation (e.g., 1E100)
When enabled, decimal parts will be converted to words (e.g., "123.45" â "one hundred twenty three point four five")
Number Systems
Supports both International (thousand, million, billion) and Indian (lakh, crore) numbering systems.
Use Cases
Perfect for check writing, legal documents, formal writing, and improving accessibility.
Examples
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About Number to Words Converter
Convert numbers to English words instantly with our comprehensive number to words converter. Transform numeric values into written text for checks, legal documents, formal writing, and accessibility purposes. Supports three conversion modes: standard words for general use, USD currency format for financial documents, and check writing format with proper fraction notation. Handles integers, decimals, scientific notation, and very large numbers up to 1e+100 (including googol). Whether you're writing a check, preparing legal paperwork, formatting academic documents, or improving content accessibility, this tool provides accurate number-to-word conversions following US English conventions. Choose from multiple letter cases (lowercase, UPPERCASE, Title Case, Sentence case) to match your document formatting requirements. Essential for financial professionals, legal writers, accountants, content creators, and anyone needing to spell out numbers in words.
Key Features
Three Conversion Modes
Convert to standard words (one thousand two hundred thirty-four), USD currency (one thousand two hundred thirty-four dollars), or check writing format (One thousand two hundred thirty-four and 00/100). Choose the format that matches your needs.
Large Number Support
Handle numbers from 1e-10 to 1e+100. Supports very large numbers including googol (10^100). Perfect for scientific notation, financial calculations, and astronomical figures.
Check Writing Format
Specialized format for writing checks with proper legal notation. Automatically formats cents as fractions (e.g., '62/100') and capitalizes the first letter following banking conventions.
Scientific Notation
Accepts scientific E notation (like 1E100, 2.5E10) and converts to words. Perfect for scientific documents, research papers, and technical writing where large or small numbers are common.
Multiple Letter Cases
Output in lowercase, UPPERCASE, Title Case, or Sentence case. Match your document's formatting requirements and style guide preferences instantly.
Currency Mode
Convert numbers to USD currency in words with automatic handling of dollars and cents. Properly formats monetary amounts following financial writing standards.
One-Click Copy
Copy converted text to clipboard with a single click. Streamlines workflows for legal documents, check writing, and content creation.
Decimal Support
Handles decimal numbers accurately. In words mode, converts decimals to 'point' notation. In currency mode, automatically separates dollars and cents.
How to Use Number to Words Converter
Enter Number
Type or paste your number in the input field. Accepts integers (123), decimals (123.45), or scientific notation (1.23E10).
Select Conversion Mode
Choose Words for general text, Currency for USD monetary amounts, or Check Writing for proper check format with fraction notation.
Choose Letter Case
Select lowercase, UPPERCASE, Title Case, or Sentence case based on your formatting needs and document style requirements.
View Conversion
The converted text appears instantly in the answer section. Review the formatted output to ensure it matches your requirements.
Copy Result
Click the Copy button to copy the converted text to your clipboard. The button confirms with a 'Copied!' message when successful.
Clear and Repeat
Use the Clear button to reset the converter and start a new conversion. Perfect for converting multiple numbers in sequence.
Frequently Asked Questions
What's the difference between Words, Currency, and Check Writing modes?
Words mode converts numbers to plain English ('one thousand two hundred'). Currency mode formats as USD with dollars and cents ('one thousand two hundred dollars and fifty cents'). Check Writing mode follows banking conventions with cents as fractions ('One thousand two hundred and 50/100'), capitalizing the first letter and using the fraction format required on checks.
What number range can the converter handle?
The converter supports numbers from 1e-10 (0.0000000001) to 1e+100 (googol). This includes all practical financial amounts, scientific notation, and even astronomical numbers. It can handle 300 digits, covering virtually any real-world conversion need.
How does scientific notation work?
Enter numbers in scientific E notation like '1E100' or '2.5E10'. The converter recognizes this format and converts to words. For example, 1E6 becomes 'one million' and 1E100 becomes 'ten duotrigintillion' (also known as a googol).
Why write numbers as words on checks?
Writing amounts in words prevents check fraud and alteration. It's much harder to change 'One hundred dollars' to 'One thousand dollars' than to alter '100.00' to '1000.00'. If there's a discrepancy between the numerical and written amount, banks use the written amount as the legal value.
When should I spell out numbers in formal writing?
Style guides typically recommend spelling out numbers one through nine, numbers at the beginning of sentences, and common fractions. Larger numbers can be written as numerals unless they appear at the start of a sentence. Always follow your specific style guide (APA, Chicago, MLA) for requirements.
How are decimals handled in different modes?
In Words mode, decimals use 'point' notation (123.45 becomes 'one hundred twenty-three point four five'). In Currency mode, decimals become cents (123.45 becomes 'one hundred twenty-three dollars and forty-five cents'). Check Writing mode uses fraction notation (123.45 becomes 'One hundred twenty-three and 45/100').
What is a googol and can this converter handle it?
A googol is the number 1 followed by 100 zeros (10^100 or 1E100). While not formally used in mathematics, it represents an extremely large number. Yes, this converter can handle googol and converts it to 'ten duotrigintillion' or 'a googol'.
Why is the letter case important?
Letter case matters for document consistency. Legal documents often use Sentence case, check writing typically uses Sentence case with capital first letter, academic papers follow specific style guides, and some formal documents require UPPERCASE. Choose the case that matches your document requirements.
Can I convert negative numbers?
Yes, the converter handles negative numbers by adding 'negative' before the number in words. For example, -100 becomes 'negative one hundred' or in currency 'negative one hundred dollars'.
How does this help with accessibility?
Screen readers may interpret '$100' and 'one hundred dollars' differently depending on settings and context. Spelling out numbers provides direct, clear understanding for users relying on assistive technologies, improving content accessibility for visually impaired users.
Is this suitable for legal documents in different countries?
This converter follows US English conventions. For international use, write amounts in your own currency (the words will be in US English). When documents cross borders, banks typically use exchange rates to convert currencies. Always consult legal professionals for jurisdiction-specific requirements.
Use Cases
- Check Writing: Write checks with proper legal format. Convert payment amounts to words with cents as fractions (e.g., '5,075.62' becomes 'Five thousand seventy-five and 62/100'). Prevents check fraud by making alterations obvious.
- Legal Documents and Contracts: Spell out monetary amounts in contracts, agreements, and legal documents. Writing numbers as words prevents disputes and fraud, as written amounts take precedence over numerical figures in case of discrepancy.
- Financial Documents: Convert financial figures to words for invoices, receipts, loan agreements, and financial reports. Essential for banking, accounting, and financial services where dual notation (numbers and words) prevents errors.
- Formal Writing and Academic Papers: Follow style guide rules (APA, Chicago, MLA) for spelling out numbers in formal writing. Convert statistics, measurements, and figures to words when required by academic formatting standards.
- Accessibility Improvement: Make content more accessible for screen readers and visually impaired users. Written words can be easier to understand than numbers in certain contexts, improving content usability.
- Presentation and Communication: Spell out numbers in presentations and speeches to emphasize magnitude. 'Five million users' is clearer and more impactful than '5,000,000 users' in slides and verbal communication.
- International Documents: Prevent confusion when documents cross international boundaries. Written words clarify amounts when number formatting conventions differ between countries.