Roman Numeral Converter API
Roman Numeral Converter is a bidirectional tool for converting between Arabic numbers (1-3999) and Roman numerals. It provides detailed breakdowns of the conversion process.
The Roman Numeral Converter API provides reliable and fast access to roman numeral converter data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.
To use Roman Numeral Converter, 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/romanconverterCode Examples
Here are examples of how to call the Roman Numeral Converter API in different programming languages:
curl -X GET \
"https://api.apiverve.com/v1/romanconverter?number=2024" \
-H "X-API-Key: your_api_key_here"const response = await fetch('https://api.apiverve.com/v1/romanconverter?number=2024', {
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/romanconverter?number=2024', 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/romanconverter?number=2024', 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/romanconverter?number=2024');
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/romanconverter?number=2024", 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/romanconverter?number=2024')
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/romanconverter?number=2024");
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}Authentication
The Roman Numeral Converter 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 Roman Numeral Converter API directly in your browser with live requests and responses.
Parameters
The Roman Numeral Converter API supports multiple query options. Use one of the following:
Option 1: Number to Roman
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
number | integer | required | The number to convert to Roman numerals Range: 1 - 3999 | - |
Option 2: Roman to Number
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
roman | string | required | The Roman numeral to convert to a number | - |
Response
The Roman Numeral Converter API returns responses in JSON, XML, YAML, and CSV formats:
Example Responses
{
"status": "ok",
"error": null,
"data": {
"number": 2024,
"roman": "MMXXIV",
"breakdown": {
"M": 2,
"X": 2,
"IV": 1
}
}
}<?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>2024</number>
<roman>MMXXIV</roman>
<breakdown>
<M>2</M>
<X>2</X>
<IV>1</IV>
</breakdown>
</data>
</response>
status: ok
error: null
data:
number: 2024
roman: MMXXIV
breakdown:
M: 2
X: 2
IV: 1
| key | value |
|---|---|
| number | 2024 |
| roman | MMXXIV |
| breakdown | {M:2,X:2,IV:1} |
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 converted number from Roman numeral input | |
roman | string | The original Roman numeral provided for conversion | |
breakdown | object | Object containing Roman numeral components and their counts | |
â”” MPremium | number | Count of M (1000) symbols in breakdown | |
â”” XPremium | number | Count of X (10) symbols in breakdown | |
â”” IVPremium | number | Count of IV (4) subtractive pairs in breakdown |
Headers
Required and optional headers for Roman Numeral Converter 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 Roman Numeral Converter through GraphQL to combine it with other API calls in a single request. Query only the roman numeral converter 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 {
romanconverter(
input: {
number: 2024
}
) {
number
roman
breakdown {
M
X
IV
}
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The Roman Numeral Converter API supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Roman Numeral Converter 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 Roman Numeral Converter directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.
Rate Limiting
Roman Numeral Converter API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Roman Numeral Converter 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 Roman Numeral Converter 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, Roman Numeral Converter 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 Roman Numeral Converter:
- Monitor the rate limit headers to track your Roman Numeral Converter usage (Free plan only)
- Cache roman numeral converter responses where appropriate to reduce API calls
- Upgrade to Pro or Mega for guaranteed no-throttle Roman Numeral Converter performance
Note: Roman Numeral Converter rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Roman Numeral Converter on Free tier.
Error Codes
The Roman Numeral Converter 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 Roman Numeral Converter with SDKs
Get started quickly with official Roman Numeral Converter 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 Roman Numeral Converter with No-Code API Tools
Connect the Roman Numeral Converter API to your favorite automation platform without writing code. Build workflows that leverage roman numeral converter data across thousands of apps.





All platforms use your same API key to access Roman Numeral Converter. Visit our integrations hub for step-by-step setup guides.
Frequently Asked Questions
How do I get an API key for Roman Numeral Converter?
How many credits does Roman Numeral Converter cost?
Each successful Roman Numeral Converter 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 roman numeral converter lookups.
Can I use Roman Numeral Converter in production?
The free plan is for testing and development only. For production use of Roman Numeral Converter, 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 Roman Numeral Converter from a browser?
What happens if I exceed my Roman Numeral Converter credit limit?
When you reach your monthly credit limit, Roman Numeral Converter 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.



