Unit Converter
Unit Converter is a simple tool for converting units. It returns the converted value.
This API provides reliable and fast access to unit converter data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.
To use this API, you need an API key. You can get one by creating a free account and visiting your dashboard.
View API in DirectoryEndpoint
GET https://api.apiverve.com/v1/unitconverterCode Examples
Here are examples of how to call this API in different programming languages:
curl -X GET \
"https://api.apiverve.com/v1/unitconverter?value=100&from=lb&to=kg" \
-H "X-API-Key: your_api_key_here"const response = await fetch('https://api.apiverve.com/v1/unitconverter', {
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/unitconverter', 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/unitconverter', 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/unitconverter');
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/unitconverter", 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/unitconverter')
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))Authentication
This API requires authentication via API key. Include your API key in the request header:
X-API-Key: your_api_key_hereParameters
The following parameters are available for this API endpoint:
| Parameter | Type | Required | Location | Description | Example |
|---|---|---|---|---|---|
| value | number | Yes | query | The value to convert from (e.g., 100) | 100 |
| from | string | Yes | query | The unit to convert from. Allowed values: lb, kg, oz, g, in, cm, ft, m, mi, km, yd, mm, cm2, m2, mi2, km2, yd2, mm2, c, f, k | lb |
| to | string | Yes | query | The unit to convert to. Allowed values: lb, kg, oz, g, in, cm, ft, m, mi, km, yd, mm, cm2, m2, mi2, km2, yd2, mm2, c, f, k | kg |
Response
The API returns responses in JSON, XML, and YAML formats:
Example Responses
{
"status": "ok",
"error": null,
"data": {
"result": {
"result": 45.36,
"from": "100 lb",
"to": "kg"
},
"unitDefinitions": {
"from": {
"abbr": "lb",
"measure": "mass",
"system": "imperial",
"singular": "Pound",
"plural": "Pounds"
},
"to": {
"abbr": "kg",
"measure": "mass",
"system": "metric",
"singular": "Kilogram",
"plural": "Kilograms"
}
}
}
}<Root>
<status>ok</status>
<error />
<data>
<result>
<result>45.36</result>
<from>100 lb</from>
<to>kg</to>
</result>
<unitDefinitions>
<from>
<abbr>lb</abbr>
<measure>mass</measure>
<system>imperial</system>
<singular>Pound</singular>
<plural>Pounds</plural>
</from>
<to>
<abbr>kg</abbr>
<measure>mass</measure>
<system>metric</system>
<singular>Kilogram</singular>
<plural>Kilograms</plural>
</to>
</unitDefinitions>
</data>
</Root>status: ok
error:
data:
result:
result: 45.36
from: 100 lb
to: kg
unitDefinitions:
from:
abbr: lb
measure: mass
system: imperial
singular: Pound
plural: Pounds
to:
abbr: kg
measure: mass
system: metric
singular: Kilogram
plural: KilogramsResponse 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 | {...} |
Response Data Fields
When the request is successful, the data object contains the following fields:
| Field | Type | Sample Value |
|---|---|---|
| result | object | {...} |
| result.result | number | 45.36 |
| result.from | string | "100 lb" |
| result.to | string | "kg" |
| unitDefinitions | object | {...} |
| unitDefinitions.from | object | {...} |
| unitDefinitions.from.abbr | string | "lb" |
| unitDefinitions.from.measure | string | "mass" |
| unitDefinitions.from.system | string | "imperial" |
| unitDefinitions.from.singular | string | "Pound" |
| unitDefinitions.from.plural | string | "Pounds" |
| unitDefinitions.to | object | {...} |
| unitDefinitions.to.abbr | string | "kg" |
| unitDefinitions.to.measure | string | "mass" |
| unitDefinitions.to.system | string | "metric" |
| unitDefinitions.to.singular | string | "Kilogram" |
| unitDefinitions.to.plural | string | "Kilograms" |
Headers
Required and optional headers for API requests:
| Header Name | Required | Example Value | Description |
|---|---|---|---|
| X-API-Key | Yes | your_api_key_here | Your APIVerve API key. Found in your dashboard under API Keys. |
| Accept | No | application/json | Specify response format: application/json (default), application/xml, or application/yaml |
| User-Agent | No | MyApp/1.0 | Identifies your application for analytics and debugging purposes |
| X-Request-ID | No | req_123456789 | Custom request identifier for tracking and debugging requests |
| Cache-Control | No | no-cache | Control caching behavior for the request and response |
Client Libraries
To get started with minimal code, most of our APIs are available through client libraries and clients:
Error Codes
The API uses standard HTTP status codes to indicate success or failure:
| Status Code | Message | Description |
|---|---|---|
| 200 | OK | Request successful, data returned |
| 400 | Bad Request | Invalid request parameters or malformed request |
| 401 | Unauthorized | Missing or invalid API key |
| 403 | Forbidden | API key does not have permission for this endpoint |
| 429 | Too Many Requests | Rate limit exceeded, please slow down requests |
| 500 | Internal Server Error | Server error, please try again later |
Was this page helpful?
Help us improve our documentation




