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Number to Words Converter
x402
Number to Words Converter is a paid API for AI agents from units-convert.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Converts a whole number (or dollar amount) into its English cardinal words, ordinal words, and check-writing dollar/cents format.
Price / call$0.02
Success—
StatusUnknown
How this service works
Write a whole number in English words (cardinal and ordinal) and as a check-writing amount in dollars and cents.
Output
Returns the cardinal English word form (e.g. 'forty-two thousand five hundred eighteen'), the ordinal form (e.g. 'forty-two thousand five hundred eighteenth'), the whole number part, cents value, and a check-writing formatted string (e.g. 'forty-two thousand five hundred eighteen and 00/100 dollars').
Example use cases
Check writing amount in words
“I need to write a check for $1,247.85 — can you spell out the amount in words the way it appears on a bank check?”
Ordinal number for a formal document
“What is the ordinal word form of 53 — like for writing it out in a formal legal document?”
Spelling large numbers in English
“How do you write 2500000 in English words? I need both the regular (cardinal) spelling and the ordinal form.”
Technical details
Endpoint
GEThttps://units-convert.x402tookit.com/number-words?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to render a number as English text for human-readable documents, checks, or formal writing. It handles both cardinal and ordinal forms plus the specific check-writing dollar/cents convention, making it more complete than generic number-to-text libraries for financial and legal contexts.
Side effects
- Value exceeds 999 quadrillion limit — input rejected
- Non-integer or unsupported numeric format — unexpected results
- Negative numbers may not be supported
- Missing required 'value' query parameter — request fails
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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