Unit conversion API

Convert between physical units — length, mass, volume, area, speed, data size, time, and temperature. Answers 'convert 5 miles to km', 'how many ounces in a kilogram', '100 F to C', 'GB to MB'.

Price$0.01per request

MethodPOST

Route/v1/convert/units

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

convertunitsmeasurementmetricimperialtemperature

API URLhttps://x402.hexl.dev/v1/convert/units

Integration docs

Example request

{
  "value": 5,
  "from": "mi",
  "to": "km"
}

Example response

{
  "value": 5,
  "from": "mi",
  "to": "km",
  "result": 8.04672,
  "category": "length"
}

Input schema

{
  "type": "object",
  "required": [
    "value",
    "from",
    "to"
  ],
  "properties": {
    "value": {
      "type": "number"
    },
    "from": {
      "type": "string",
      "examples": [
        "mi"
      ]
    },
    "to": {
      "type": "string",
      "examples": [
        "km"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "required": [
    "value",
    "from",
    "to",
    "result",
    "category"
  ],
  "properties": {
    "value": {
      "type": "number"
    },
    "from": {
      "type": "string"
    },
    "to": {
      "type": "string"
    },
    "result": {
      "type": "number"
    },
    "category": {
      "type": "string"
    }
  }
}