BusCalc connects 351 free, ad-free calculators with decision analysis and customer-ready documents. Explore Decision Feasibility, live precious-metal spot snapshots, dated fuel/energy and currency references, plus NOAA/NWS weather-impact tools. Developers and AI assistants can use 26 API/MCP tool families with inspectable results and replayable calculation receipts. Includes free embeddable widgets and optional paid report and job-document packages. Source dates and limits are explicit.
