CalcFi offers over 160 free financial calculators designed to assist users with various money decisions, including budgeting, retirement planning, and tax calculations. Users can access tools for mortgage calculations, FIRE (Financial Independence, Retire Early) numbers, savings rates, and net worth assessments without the need for signup or encountering ads. The platform allows users to receive their results via email as a free PDF report. Key features include calculators for affordability, payments, rent vs buy comparisons, ROI, payoff planning, credit card management, and more. CalcFi also provides resources for tracking assets, liabilities, and net worth, making it a comprehensive tool for anyone looking to make informed financial decisions.