Utilities

Fertilizer N-P-K Blend Calculator

Compute how to mix base fertilizers to hit a target N-P-K analysis like 10-10-10. Outputs per-fertilizer kg plus a parts ratio for any batch size.

html· HTML resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/fertilizer-blend-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"target":"10-10-10","ferts":"Urea = 46-0-0\nDAP = 18-46-0\nMuriate of potash = 0-0-60","batch":100}'

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/fertilizer-blend-calculator

Parameters

Name	Type	Required	Description
target	text	Yes	The three numbers on a fertilizer bag: %N - %P₂O₅ - %K₂O.
ferts	textarea	Yes	The base fertilizers you can mix. One per line: Name = N-P-K. Copy from the reference table below or declare your own.
batch	number	No	How many kg of final blend you want to produce. The recipe scales to this.

Response format

HTML result

JSON

{
  "result": "<div>Processed HTML content</div>",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

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-fertilizer-blend-calculator": {
      "name": "fertilizer-blend-calculator",
      "description": "Compute how to mix base fertilizers to hit a target N-P-K analysis like 10-10-10. Outputs per-fertilizer kg plus a parts ratio for any batch size.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=fertilizer-blend-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": "fertilizer-blend-calculator",
    "arguments": {
  "target": "10-10-10",
  "ferts": "Urea = 46-0-0\nDAP = 18-46-0\nMuriate of potash = 0-0-60",
  "batch": 100
}
  }
}

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

curl -X POST 'https://api.elysiatools.com/en/api/tools/fertilizer-blend-calculator' \ -H 'Content-Type: application/json' \ -d '{"target":"10-10-10","ferts":"Urea = 46-0-0\nDAP = 18-46-0\nMuriate of potash = 0-0-60","batch":100}'

Name

Type

Required

Description

target

text

Yes

The three numbers on a fertilizer bag: %N - %P₂O₅ - %K₂O.

ferts

textarea

Yes

The base fertilizers you can mix. One per line: Name = N-P-K. Copy from the reference table below or declare your own.

batch

number

How many kg of final blend you want to produce. The recipe scales to this.

{ "mcpServers": { "elysiatools-fertilizer-blend-calculator": { "name": "fertilizer-blend-calculator", "description": "Compute how to mix base fertilizers to hit a target N-P-K analysis like 10-10-10. Outputs per-fertilizer kg plus a parts ratio for any batch size.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=fertilizer-blend-calculator", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "fertilizer-blend-calculator", "arguments": { "target": "10-10-10", "ferts": "Urea = 46-0-0\nDAP = 18-46-0\nMuriate of potash = 0-0-60", "batch": 100 } } }