MFG Calcs

The manufacturing math engine, machine-callable.

Run 5,400+ manufacturing calculators by API: search the catalog, inspect inputs, and compute OEE, cycle time, unit cost, and more. Free JSON API plus an MCP

About this page

  • The MFG Calcs calculation engine is machine-callable: a free JSON API at /api/calc lets scripts, spreadsheets, and integrations search the catalog of 5,400+ manufacturing calculators, inspect a calculator's inputs and defaults, and run it with labeled, unit-carrying results.
  • AI agents connect through the MCP server at /api/mcp (streamable HTTP, no key required), which exposes search_calculators, get_calculator, and run_calculator tools backed by the same tested formula engine as the site.
  • Use is free with attribution: every response includes the canonical calculator URL to cite. The machine-readable interface description lives at /openapi.json, and the rate limit is 120 requests per minute per IP.

Related manufacturing topics

  • manufacturing API
  • OEE API
  • MCP server manufacturing
  • calculator API

Last reviewed 2026-05-12.