Health

Urea / BUN Unit Converter (BUN mg/dL ↔ Urea mmol/L)

Convert BUN (mg/dL) to/from urea (mmol/L). Factor 0.357 (urea molar mass 60.06, BUN counts 2 N = 28.014). Derived from Young 1987, StatPearls, KDIGO 2012. Not medical advice.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/urea-bun-converter' \
  -H 'Content-Type: application/json' \
  -d '{"value":20,"sourceUnit":"bun","targetUnit":"urea","decimalPlaces":2}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/urea-bun-converter

Parameters

Name	Type	Required	Description
value	number	Yes	The BUN (mg/dL) or urea (mmol/L) value to convert.
sourceUnit	select	Yes	The unit of the input value.
targetUnit	select	Yes	The unit to convert into.
decimalPlaces	number	No	—

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-urea-bun-converter": {
      "name": "urea-bun-converter",
      "description": "Convert BUN (mg/dL) to/from urea (mmol/L). Factor 0.357 (urea molar mass 60.06, BUN counts 2 N = 28.014). Derived from Young 1987, StatPearls, KDIGO 2012. Not medical advice.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=urea-bun-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "urea-bun-converter",
    "arguments": {
  "value": 20,
  "sourceUnit": "bun",
  "targetUnit": "urea",
  "decimalPlaces": 2
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

Browse tools Open tool

Name

Type

Required

Description

value

number

Yes

The BUN (mg/dL) or urea (mmol/L) value to convert.

sourceUnit

select

Yes

The unit of the input value.

targetUnit

select

Yes

The unit to convert into.

decimalPlaces

number

—

{ "mcpServers": { "elysiatools-urea-bun-converter": { "name": "urea-bun-converter", "description": "Convert BUN (mg/dL) to/from urea (mmol/L). Factor 0.357 (urea molar mass 60.06, BUN counts 2 N = 28.014). Derived from Young 1987, StatPearls, KDIGO 2012. Not medical advice.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=urea-bun-converter", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "urea-bun-converter", "arguments": { "value": 20, "sourceUnit": "bun", "targetUnit": "urea", "decimalPlaces": 2 } } }