Number to WordsNumber to Words API

OnlineCredit Usage:1 per callRefreshed 1 month ago
avg: 810ms|p50: 757ms|p75: 846ms|p90: 953ms|p99: 1166ms

Number to Words is a simple tool for converting numbers to words. It returns the number in words.

The Number to Words API provides reliable and fast access to number to words data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.

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

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

Code Examples

Here are examples of how to call the Number to Words API in different programming languages:

cURL Request
curl -X GET \
  "https://api.apiverve.com/v1/numbertowords?number=975.07" \
  -H "X-API-Key: your_api_key_here"
JavaScript (Fetch API)
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);
Python (Requests)
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)
Node.js (Native HTTPS)
const https = require('https');
const url = require('url');

const options = {
  method: 'GET',
  headers: {
    'X-API-Key': 'your_api_key_here',
    'Content-Type': 'application/json'
  }
};

const req = https.request('https://api.apiverve.com/v1/numbertowords?number=975.07', options, (res) => {
  let data = '';
  res.on('data', (chunk) => data += chunk);
  res.on('end', () => console.log(JSON.parse(data)));
});

req.end();
PHP (cURL)
<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/numbertowords?number=975.07');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'X-API-Key: your_api_key_here',
    'Content-Type: application/json'
]);

$response = curl_exec($ch);
curl_close($ch);

$data = json_decode($response, true);
print_r($data);

?>
Go (net/http)
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))
}
Ruby (Net::HTTP)
require 'net/http'
require 'json'

uri = URI('https://api.apiverve.com/v1/numbertowords?number=975.07')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Get.new(uri)
request['X-API-Key'] = 'your_api_key_here'
request['Content-Type'] = 'application/json'

response = http.request(request)
puts JSON.pretty_generate(JSON.parse(response.body))
C# (HttpClient)
using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using var client = new HttpClient();
        client.DefaultRequestHeaders.Add("X-API-Key", "your_api_key_here");

        var response = await client.GetAsync("https://api.apiverve.com/v1/numbertowords?number=975.07");
        response.EnsureSuccessStatusCode();

        var responseBody = await response.Content.ReadAsStringAsync();
        Console.WriteLine(responseBody);
    }
}

Authentication

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

Required 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:

Convert Number

ParameterTypeRequiredDescriptionDefaultExample
numbernumberrequired
The number to convert to words
-975.07

Response

The Number to Words API returns responses in JSON, XML, YAML, and CSV formats:

Example Responses

JSON Response
200 OK
{
  "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"
  }
}
XML Response
200 OK
<?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>
YAML Response
200 OK
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
CSV Response
200 OK
keyvalue
number975.07
wordsnine hundred seventy-five point zero seven
ordinalnine hundred seventy-fifth point zero seven
numberOfDigits_numeric3
numberOfDigits_wordsthree
eachNumber[nine,seven,five]
afterDecimal{number:07,words:[zero,seven],numberOfDigits_numeric:2,numberOfDigits_words:two}
localeen-US

Response Structure

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

FieldTypeDescriptionExample
statusstringIndicates whether the request was successful ("ok") or failed ("error")ok
errorstring | nullContains error message if status is "error", otherwise nullnull
dataobject | nullContains the API response data if successful, otherwise null{...}

Learn more about response formats →

Response Data Fields

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

Response fields marked with Premium are available exclusively on paid plans.View pricing
FieldTypeSample ValueDescription
numbernumber975.07The original number provided for conversion
wordsPremiumstring"nine hundred seventy-five point zero seven"The cardinal word representation of the number
ordinalPremiumstring"nine hundred seventy-fifth point zero seven"The ordinal word representation of the number
numberOfDigits_numericnumber3Count of digits before the decimal point
numberOfDigits_wordsPremiumstring"three"The digit count expressed as words
eachNumberPremiumarray["nine", ...]Array containing each individual digit as words
afterDecimalobject{...}-
â”” numberstring"07"Decimal portion of the number as string
â”” wordsPremiumarray["zero", ...]Decimal digits represented as individual words
â”” numberOfDigits_numericnumber2Count of digits after the decimal point
â”” numberOfDigits_wordsPremiumstring"two"Decimal digit count expressed as words
localestring"en-US"Language locale code for the conversion

Headers

Required and optional headers for Number to Words API requests:

Header NameRequiredExample ValueDescription
X-API-Keyrequiredyour_api_key_hereYour APIVerve API key. Found in your dashboard under API Keys.
Acceptoptionalapplication/jsonSpecify response format: application/json (default), application/xml, or application/yaml
User-AgentoptionalMyApp/1.0Identifies your application for analytics and debugging purposes
X-Request-IDoptionalreq_123456789Custom request identifier for tracking and debugging requests
Cache-Controloptionalno-cacheControl caching behavior for the request and response

Learn more about 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.

Test Number to Words in the GraphQL Explorer to confirm availability and experiment with queries.

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

GraphQL Endpoint
POST https://api.apiverve.com/v1/graphql
GraphQL Query Example
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 supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Number to Words directly from browser-based applications without proxy servers.

CORS HeaderValueDescription
Access-Control-Allow-Origin*Accepts requests from any origin
Access-Control-Allow-Methods*Accepts any HTTP method
Access-Control-Allow-Headers*Accepts any request headers

Browser Usage: You can call Number to Words directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.

Learn more about CORS support →

Rate Limiting

Number to Words API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Number to Words users.

PlanRate LimitDescription
Free5 requests/minHard rate limit enforced - exceeding will return 429 errors
StarterNo LimitProduction ready - standard traffic priority
ProNo LimitProduction ready - preferred traffic priority
MegaNo LimitProduction ready - highest traffic priority

Learn more about rate limiting →

Rate Limit Headers

When rate limits apply, each Number to Words response includes headers to help you track your usage:

HeaderDescription
X-RateLimit-LimitMaximum number of requests allowed per time window
X-RateLimit-RemainingNumber of requests remaining in the current window
X-RateLimit-ResetUnix timestamp when the rate limit window resets

Handling Rate Limits

Free Plan: When you exceed your rate limit, Number to Words returns a 429 Too Many Requests status code. Your application should implement appropriate backoff logic to handle this gracefully.

Paid Plans: No rate limiting or throttling applied. All paid plans (Starter, Pro, Mega) are production-ready.

Best Practices for Number to Words:

  • Monitor the rate limit headers to track your Number to Words usage (Free plan only)
  • Cache number to words responses where appropriate to reduce API calls
  • Upgrade to Pro or Mega for guaranteed no-throttle Number to Words performance

Note: Number to Words rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Number to Words on Free tier.

Error Codes

The Number to Words API uses standard HTTP status codes to indicate success or failure:

CodeMessageDescriptionSolution
200OKRequest successful, data returnedNo action needed - request was successful
400Bad RequestInvalid request parameters or malformed requestCheck required parameters and ensure values match expected formats
401UnauthorizedMissing or invalid API keyInclude x-api-key header with valid API key from dashboard
403ForbiddenAPI key lacks permission or insufficient creditsCheck credit balance in dashboard or upgrade plan
429Too Many RequestsRate limit exceeded (Free: 5 req/min)Implement request throttling or upgrade to paid plan
500Internal Server ErrorServer error occurredRetry request after a few seconds, contact support if persists
503Service UnavailableAPI temporarily unavailableWait and retry, check status page for maintenance updates

Learn more about error handling →

Need help? Contact support with your X-Request-ID for assistance.

Integrate Number to Words with SDKs

Get started quickly with official Number to Words SDKs for your preferred language. Each library handles authentication, request formatting, and error handling automatically.

Available for Node.js, Python, C#/.NET, and Android/Java. All SDKs are open source and regularly updated.

Integrate Number to Words with No-Code API Tools

Connect the Number to Words API to your favorite automation platform without writing code. Build workflows that leverage number to words data across thousands of apps.

All platforms use your same API key to access Number to Words. Visit our integrations hub for step-by-step setup guides.

Frequently Asked Questions

How do I get an API key for Number to Words?
Sign up for a free account at dashboard.apiverve.com. Your API key will be automatically generated and available in your dashboard. The same key works for Number to Words and all other APIVerve APIs. The free plan includes 1,000 credits plus a 500 credit bonus.
How many credits does Number to Words cost?

Each successful Number to Words API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful number to words lookups.

Can I use Number to Words in production?

The free plan is for testing and development only. For production use of Number to Words, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.

Can I use Number to Words from a browser?
Yes! The Number to Words API supports CORS with wildcard configuration, so you can call it directly from browser-based JavaScript without needing a proxy server. See the CORS section above for details.
What happens if I exceed my Number to Words credit limit?

When you reach your monthly credit limit, Number to Words API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.

What's Next?

Continue your journey with these recommended resources

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