Math & Numbers

Wavelength Calculator (λ = v/f, period, wave number, angular frequency)

Solve wavelength, frequency, or wave speed from v=f·λ, with derived period, angular frequency, wave number, and photon energy

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/wavelength-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"solveFor":"wavelength","mediumPreset":"air","wavelength":0,"frequency":440,"speed":343}'

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/wavelength-calculator

Parameters

Name	Type	Required	Description
solveFor	select	No	—
mediumPreset	select	No	—
wavelength	number	No	—
frequency	number	No	—
speed	number	No	—

Response format

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-wavelength-calculator": {
      "name": "wavelength-calculator",
      "description": "Solve wavelength, frequency, or wave speed from v=f·λ, with derived period, angular frequency, wave number, and photon energy",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=wavelength-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": "wavelength-calculator",
    "arguments": {
  "solveFor": "wavelength",
  "mediumPreset": "air",
  "wavelength": 0,
  "frequency": 440,
  "speed": 343
}
  }
}

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/wavelength-calculator' \ -H 'Content-Type: application/json' \ -d '{"solveFor":"wavelength","mediumPreset":"air","wavelength":0,"frequency":440,"speed":343}'

Name

Type

Required

Description

solveFor

select

—

mediumPreset

select

—

wavelength

number

—

frequency

number

—

speed

number

—

{ "mcpServers": { "elysiatools-wavelength-calculator": { "name": "wavelength-calculator", "description": "Solve wavelength, frequency, or wave speed from v=f·λ, with derived period, angular frequency, wave number, and photon energy", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=wavelength-calculator", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "wavelength-calculator", "arguments": { "solveFor": "wavelength", "mediumPreset": "air", "wavelength": 0, "frequency": 440, "speed": 343 } } }