Number to Words API
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
https://api.apiverve.com/v1/numbertowordsCode Examples
Here are examples of 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)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
$ch = curl_init();
curl_setopt($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);
?>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))
}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))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:
X-API-Key: your_api_key_hereInteractive 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
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
number | number | required | The number to convert to words | - |
Response
The Number to Words API returns responses in JSON, XML, YAML, and CSV formats:
Example Responses
{
"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 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
| key | value |
|---|---|
| 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:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains 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:
| Field | Type | Sample Value | Description |
|---|---|---|---|
number | number | The original number provided for conversion | |
wordsPremium | string | The cardinal word representation of the number | |
ordinalPremium | string | The ordinal word representation of the number | |
numberOfDigits_numeric | number | Count of digits before the decimal point | |
numberOfDigits_wordsPremium | string | The digit count expressed as words | |
eachNumberPremium | array | Array containing each individual digit as words | |
afterDecimal | object | - | |
â”” number | string | Decimal portion of the number as string | |
â”” wordsPremium | array | Decimal digits represented as individual words | |
â”” numberOfDigits_numeric | number | Count of digits after the decimal point | |
â”” numberOfDigits_wordsPremium | string | Decimal digit count expressed as words | |
locale | string | Language locale code for the conversion |
Headers
Required and optional headers for Number to Words API requests:
| Header Name | Required | Example Value | Description |
|---|---|---|---|
X-API-Key | required | your_api_key_here | Your APIVerve API key. Found in your dashboard under API Keys. |
Accept | optional | application/json | Specify response format: application/json (default), application/xml, or application/yaml |
User-Agent | optional | MyApp/1.0 | Identifies your application for analytics and debugging purposes |
X-Request-ID | optional | req_123456789 | Custom request identifier for tracking and debugging requests |
Cache-Control | optional | no-cache | Control caching behavior for the request and response |
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/graphqlquery {
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 Header | Value | Description |
|---|---|---|
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.
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.
| Plan | Rate Limit | Description |
|---|---|---|
| Free | 5 requests/min | Hard rate limit enforced - exceeding will return 429 errors |
| Starter | No Limit | Production ready - standard traffic priority |
| Pro | No Limit | Production ready - preferred traffic priority |
| Mega | No Limit | Production 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:
| Header | Description |
|---|---|
X-RateLimit-Limit | Maximum number of requests allowed per time window |
X-RateLimit-Remaining | Number of requests remaining in the current window |
X-RateLimit-Reset | Unix 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:
| Code | Message | Description | Solution |
|---|---|---|---|
200 | OK | Request successful, data returned | No action needed - request was successful |
400 | Bad Request | Invalid request parameters or malformed request | Check required parameters and ensure values match expected formats |
401 | Unauthorized | Missing or invalid API key | Include x-api-key header with valid API key from dashboard |
403 | Forbidden | API key lacks permission or insufficient credits | Check credit balance in dashboard or upgrade plan |
429 | Too Many Requests | Rate limit exceeded (Free: 5 req/min) | Implement request throttling or upgrade to paid plan |
500 | Internal Server Error | Server error occurred | Retry request after a few seconds, contact support if persists |
503 | Service Unavailable | API temporarily unavailable | Wait 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?
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?
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.



