Math & Numbers

Motor Efficiency Calculator (η = P_out / P_in)

Compute motor efficiency η = P_out / P_in. Supports electrical input (single-phase U·I·cosφ or three-phase √3·U·I·cosφ) or direct P_in; output power can be derived from a loss breakdown (copper+iron+rotor copper+mechanical+stray) or supplied directly.

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/motor-efficiency-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"powerInputMode":"electrical","phase":"three","voltage":400,"current":15,"powerFactor":0.85,"pin":0,"useLosses":false,"pout":8000,"copperLoss":0,"ironLoss":0,"rotorCopperLoss":0,"mechanicalLoss":0,"strayLoss":0,"decimalPlaces":4}'

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/motor-efficiency-calculator

Parameters

Name	Type	Required	Description
powerInputMode	select	No	—
phase	select	No	Only used in Electrical mode.
voltage	number	No	Required in Electrical mode. Line-to-line voltage for three-phase.
current	number	No	Required in Electrical mode. Line current.
powerFactor	number	No	Required in Electrical mode. 0 < cosφ ≤ 1.

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-motor-efficiency-calculator": {
      "name": "motor-efficiency-calculator",
      "description": "Compute motor efficiency η = P_out / P_in. Supports electrical input (single-phase U·I·cosφ or three-phase √3·U·I·cosφ) or direct P_in; output power can be derived from a loss breakdown (copper+iron+rotor copper+mechanical+stray) or supplied directly.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=motor-efficiency-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": "motor-efficiency-calculator",
    "arguments": {
  "powerInputMode": "electrical",
  "phase": "three",
  "voltage": 400,
  "current": 15,
  "powerFactor": 0.85,
  "pin": 0,
  "useLosses": false,
  "pout": 8000,
  "copperLoss": 0,
  "ironLoss": 0,
  "rotorCopperLoss": 0,
  "mechanicalLoss": 0,
  "strayLoss": 0,
  "decimalPlaces": 4
}
  }
}

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