Health

Pediatric Dose Calculator (Young / Clark / mg·kg⁻¹ / BSA)

Estimate a pediatric drug dose using one of four methods: (1) Young's rule (age-based) — Child dose = Adult dose × age / (age + 12); (2) Clark's rule (weight in pounds) — Child dose = Adult dose × weight(lb) / 150; (3) mg/kg per-weight regimen (the modern first-line method) — Child dose = dosePerKg × weight(kg); (4) BSA method (Mosteller) — Child dose = Adult dose × BSA_child / 1.73, with BSA = √(height·weight/3600). These are empirical approximations; modern practice prefers drug-specific mg/kg or mg/m² regimens derived from pediatric trials and verified against pediatric references and the approved labeling. Not medical advice.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'http://127.0.0.1:3003/en/api/tools/pediatric-dose-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"method":"young","adultDose":200,"age":6,"weightKg":0,"height":0,"dosePerKg":0,"decimalPlaces":4}'

API reference

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

Endpoint

HTTP

POST http://127.0.0.1:3003/en/api/tools/pediatric-dose-calculator

Parameters

Name	Type	Required	Description
method	select	No	—
adultDose	number	No	Standard adult dose. Required for Young's, Clark's, and BSA methods.
age	number	No	Child age in years. Required for Young's rule.
weightKg	number	No	Child weight in kilograms. Required for mg/kg and BSA methods; also used by Clark's rule (auto-converted from kg).
height	number	No

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-pediatric-dose-calculator": {
      "name": "pediatric-dose-calculator",
      "description": "Estimate a pediatric drug dose using one of four methods: (1) Young's rule (age-based) — Child dose = Adult dose × age / (age + 12); (2) Clark's rule (weight in pounds) — Child dose = Adult dose × weight(lb) / 150; (3) mg/kg per-weight regimen (the modern first-line method) — Child dose = dosePerKg × weight(kg); (4) BSA method (Mosteller) — Child dose = Adult dose × BSA_child / 1.73, with BSA = √(height·weight/3600). These are empirical approximations; modern practice prefers drug-specific mg/kg or mg/m² regimens derived from pediatric trials and verified against pediatric references and the approved labeling. Not medical advice.",
      "baseUrl": "http://127.0.0.1:3003/mcp/sse?toolId=pediatric-dose-calculator",
      "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": "pediatric-dose-calculator",
    "arguments": {
  "method": "young",
  "adultDose": 200,
  "age": 6,
  "weightKg": 0,
  "height": 0,
  "dosePerKg": 0,
  "decimalPlaces": 4
}
  }
}

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