All Financial Calculators
Plan your financial future with clarity. Use our expert-designed calculators to explore budgeting, loans, investments, and more — all grounded in financial accuracy and simplicity.
About FinFormulas
FinFormulas helps people make smarter financial decisions through accessible, easy-to-use calculators. Whether you’re planning your budget, comparing loans, or preparing for retirement, every tool is designed to bring clarity and confidence to your money management.
Our mission is to simplify personal finance education — turning complex formulas into practical insights anyone can understand. Explore the calculators below to take control of your financial future today.
Budget
Budget Planner
Track income and expenses to see where your money goes and how to improve savings.
OpenInvesting
Investment Growth Calculator
Estimate your portfolio’s future value using compound interest and contribution schedules.
OpenLoans
Loan Repayment Estimator
Calculate monthly payments and total interest on mortgages, auto, or personal loans.
OpenHome
Mortgage Calculator
Understand how principal, rate, and term affect your mortgage payments.
OpenRetirement
Retirement Planner
Estimate how much you’ll need to retire comfortably and plan your savings strategy.
OpenSavings
Savings Goal Calculator
Project how long it will take to reach a goal amount with recurring deposits.
OpenReviewed & Verified
All FinFormulas calculators are created and reviewed by the FinFormulas Creator to ensure accuracy, usability, and clarity. Last updated October 2025.
FinFormulas is an independent educational project focused on simplifying finance through design, math, and practical insight — not financial advice.