CalcApp — Free Online Calculators for Finance, Tax & Business

CalcApp is a free suite of online calculators for finance, tax, and business, plus an AI-powered natural-language math assistant. JavaScript is required to use the interactive calculators, but you can browse the tools below.

AI Calculator Assistant — Natural Language Math Solver
Financial Calculator — Loans, Mortgages & Investments
Percentage Calculator
VAT & Tax Calculator
Margin Calculator — Profit Margin & Markup
Pricing & Subscription Plans