Enterprise Unit Conversion API

99.9% uptime guarantee. Sub-100ms response. 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

99.9% uptime guaranteed

API Endpoints

GET/api/v1/convert

Parameters: from, to, value, category

Rate limit: 100 requests/minute

POST/api/v1/batch

Parameters: body: { conversions: [...] }

Rate limit: 10 requests/minute

GET/api/v1/units/{category}

Parameters: category

Rate limit: 100 requests/minute

GET/api/v1/conversions.json

Parameters: none

Rate limit: 50 requests/minute

GET/api/v1/exchange-rates

Parameters: none

Rate limit: 60 requests/minute

Base URL

https://api.unitconvr.com/v1

Example Request

// Convert 100 meters to feet
GET https://api.unitconvr.com/v1/convert?from=meter&to=foot&value=100&category=length

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

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.