Number to Words API

Overview

To use Number to Words, you need an API key. You can get one by creating a free account and visiting your dashboard.

GET Endpoint

https://api.apiverve.com/v1/numbertowords

Example

How to call the Number to Words API in different programming languages.

curl -X GET \
  "https://api.apiverve.com/v1/numbertowords?number=975.07" \
  -H "X-API-Key: your_api_key_here"

const response = await fetch('https://api.apiverve.com/v1/numbertowords?number=975.07', {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
});

const data = await response.json();
console.log(data);

import requests

headers = {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
}

response = requests.get('https://api.apiverve.com/v1/numbertowords?number=975.07', headers=headers)

data = response.json()
print(data)

package main

import (
    "fmt"
    "io"
    "net/http"

)

func main() {
    req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/numbertowords?number=975.07", nil)

    req.Header.Set("X-API-Key", "your_api_key_here")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}

{
  "status": "ok",
  "error": null,
  "data": {
    "number": 975.07,
    "words": "nine hundred seventy-five point zero seven",
    "ordinal": "nine hundred seventy-fifth point zero seven",
    "numberOfDigits_numeric": 3,
    "numberOfDigits_words": "three",
    "eachNumber": [
      "nine",
      "seven",
      "five"
    ],
    "afterDecimal": {
      "number": "07",
      "words": [
        "zero",
        "seven"
      ],
      "numberOfDigits_numeric": 2,
      "numberOfDigits_words": "two"
    },
    "locale": "en-US"
  }
}

Authentication

The Number to Words API requires authentication via API key. Include your API key in the request header:

X-API-Key: your_api_key_here

Learn more about authentication →

Interactive API Playground

Test the Number to Words API directly in your browser with live requests and responses.

Parameters

The following parameters are available for the Number to Words API:

Response

The Number to Words API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.

Other Response Formats

<?xml version="1.0" encoding="UTF-8"?>
<response>
  <status>ok</status>
  <error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
  <data>
    <number>975.07</number>
    <words>nine hundred seventy-five point zero seven</words>
    <ordinal>nine hundred seventy-fifth point zero seven</ordinal>
    <numberOfDigits_numeric>3</numberOfDigits_numeric>
    <numberOfDigits_words>three</numberOfDigits_words>
    <eachNumber>
      <item>nine</item>
      <item>seven</item>
      <item>five</item>
    </eachNumber>
    <afterDecimal>
      <number>07</number>
      <words>
        <word>zero</word>
        <word>seven</word>
      </words>
      <numberOfDigits_numeric>2</numberOfDigits_numeric>
      <numberOfDigits_words>two</numberOfDigits_words>
    </afterDecimal>
    <locale>en-US</locale>
  </data>
</response>

status: ok
error: null
data:
  number: 975.07
  words: nine hundred seventy-five point zero seven
  ordinal: nine hundred seventy-fifth point zero seven
  numberOfDigits_numeric: 3
  numberOfDigits_words: three
  eachNumber:
    - nine
    - seven
    - five
  afterDecimal:
    number: '07'
    words:
      - zero
      - seven
    numberOfDigits_numeric: 2
    numberOfDigits_words: two
  locale: en-US

Response Structure

All API responses follow a consistent structure with the following fields:

Learn more about response formats →

Response Data Fields

When the request is successful, the data object contains the following fields:

Headers

Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →

GraphQL AccessALPHA

Access Number to Words through GraphQL to combine it with other API calls in a single request. Query only the number to words data you need with precise field selection, and orchestrate complex data fetching workflows.

Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.

POST https://api.apiverve.com/v1/graphql

query {
  numbertowords(
    input: {
      number: 975.07
    }
  ) {
    number
    words
    ordinal
    numberOfDigits_numeric
    numberOfDigits_words
    eachNumber
    afterDecimal {
      number
      words
      numberOfDigits_numeric
      numberOfDigits_words
    }
    locale
  }
}

Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.

CORS Support

The Number to Words API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →

Rate Limiting

Number to Words requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →

Error Codes

The Number to Words API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →

SDKs for Number to Words

Official Number to Words packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →

JitPack

No-Code Integrations

Number to Words works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →

Zapier

Make

Pipedream

n8n

Power Automate

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