CalcFleet

Most calculator sites are 90% ads and hide where the number came from. CalcFleet is the opposite: 121 calculators for money, home, fitness and AI economics, each a tested pure function — never an LLM guess — with sourced formulas and no signup. What stands out: every calculator is also a free MCP tool and a JSON API, so your apps and AI agents call the same math you do. The AI-economics tools (self-host vs API, RAG cost, agent cost per successful task) use dated snapshots of official prices.