Weight Converter: API and MCP

Weight Converter over REST and MCP: input fields, limits, outputs, one example request and its real answer. Free, no sign-up.

Id: units.weight
Version: 1.0.0
Access: Free
Tool page: Weight Converter
Schema: GET /api/v1/tools/units.weight

Input

Field	Type	Constraints	Description
`value` (required)	number	≥ 0, ≤ 1,000,000,000,000	Weight
`from` (required)	string	mg \| g \| kg \| t \| oz \| lb \| st	From
`to` (required)	string	mg \| g \| kg \| t \| oz \| lb \| st	To

Output

Field	Type	Description
`result`	number	Result
`mg`	number	Milligram (mg)
`g`	number	Gram (g)
`kg`	number	Kilogram (kg)
`t`	number	Metric ton (tonne) (t)
`oz`	number	Ounce (oz)
`lb`	number	Pound (lb)
`st`	number	Stone (st)

Example request

{
  "input": {
    "value": 1,
    "from": "lb",
    "to": "kg"
  },
  "locale": "en"
}

Example answer

{
  "output": {
    "result": 0.45359237,
    "mg": 453592.37,
    "g": 453.59237,
    "kg": 0.45359237,
    "t": 0.00045359237,
    "oz": 16,
    "lb": 1,
    "st": 0.0714285714286
  },
  "steps": [
    {
      "id": "factor",
      "formula": "factor = from unit (g) / to unit (g)",
      "substitution": "factor = 453.59237 / 1,000",
      "value": 0.45359237
    },
    {
      "id": "result",
      "formula": "result = value × factor",
      "substitution": "result = 1 × 0.45359237",
      "value": 0.45359237,
      "unit": "kg"
    }
  ],
  "meta": {
    "toolVersion": "1.0.0",
    "locale": "en"
  },
  "citation": {
    "url": "https://hesaplayici.com/en/unit-converter/weight-conversion-calculator",
    "title": "Weight Converter"
  }
}