unitconvr
unitconvr
Language

Enterprise Unit Conversion API

Fast and reliable API. Built for developers and engineers.

Features

Industry-Leading Speed

Avg 47ms response (faster than 99% of competitors)

Forever Free API

No credit card, no hidden limits

Enterprise Reliability

Reliable and fast

API Endpoints

GET/api/v1/convert
Parameters: from, to, value, category, lang (optional)
Rate limit: 100 requests/minute
POST/api/v1/batch
Parameters: body: { conversions: [...] }, lang (optional)
Rate limit: 10 requests/minute
GET/api/v1/units/{category}
Parameters: category, lang (optional)
Rate limit: 100 requests/minute
GET/api/v1/categories
Parameters: lang (optional)
Rate limit: 100 requests/minute
GET/api/v1/conversions.json
Parameters: lang (optional)
Rate limit: 50 requests/minute
GET/api/v1/exchange-rates
Parameters: none
Rate limit: 60 requests/minute
GET/api/v1/currencies
Parameters: lang (optional)
Rate limit: 100 requests/minute
GET/api/v1/currency-pairs
Parameters: lang (optional)
Rate limit: 100 requests/minute

Base URL

https://api.unitconvr.com/v1

Example Request

// Length conversion example
GET https://api.unitconvr.com/v1/convert?from=meter&to=foot&value=100&category=length

// API Response
{
  "from": "meter",
  "to": "foot", 
  "value": 100,
  "result": 328.084,
  "factor": 3.28084
}

// Multi-language example (with lang parameter)
GET https://api.unitconvr.com/v1/convert?from=meter&to=foot&value=100&category=length&lang=tr

// Response with Turkish translations
{
  "from": "meter",
  "to": "foot", 
  "value": 100,
  "result": 328.084,
  "factor": 3.28084,
  "fromUnit": {
    "name": "Metre",
    "plural": "Metre",
    "symbol": "m"
  },
  "toUnit": {
    "name": "Fit",
    "plural": "Fit",
    "symbol": "ft"
  }
}

Multi-Language Support

All API endpoints support multiple languages. Simply add the lang parameter to get translations.

Supported Languages:

• en (English)• tr (Turkish)• de (German)• es (Spanish)• fr (French)• hi (Hindi)• ar (Arabic)

Rate Limiting

All API endpoints are rate limited to ensure fair usage. When you exceed the rate limit, you'll receive a 429 status code.

X-RateLimit-Limit: Maximum requests allowed
X-RateLimit-Remaining: Requests remaining
X-RateLimit-Reset: Reset time (ISO 8601)
Retry-After: Seconds to wait (on 429)

Attribution Required: When using our API, please include attribution to Unitconvr.com in your application.