Financial Calculators
Free financial calculators for mortgages, loans, savings and investments — every result shows the full formula and step-by-step math, with no signup.
Each calculator below runs entirely in your browser: nothing is uploaded, no account is needed, and you can change any input and re-calculate instantly. The results break down monthly payments, total interest and payoff timelines the same way a bank amortization schedule does — so you can check a lender's offer line by line before you sign.
Mortgage Calculator
Calculate monthly mortgage payments.
Loan Calculator
Estimate loan payments and interest.
Loan Comparison Calculator
Compare multiple loans and find the best option.
Interest Calculator
Calculate simple and compound interest.
Simple Interest Calculator
Calculate simple interest on a loan or investment.
Compound Interest Calculator
Calculate compound interest growth.
Investment Calculator
Project investment growth over time.
Savings Calculator
Plan your savings goals.
Retirement Calculator
Estimate retirement savings needs.
How to use these calculators
Concrete walkthroughs with real numbers — open the tool, follow the steps.
Compare two loan offers in 3 steps
1) Open the Loan Comparison Calculator. 2) Enter each offer's amount, rate and term side by side. 3) Read the total-interest difference — on a $300,000 loan, 6.5% vs 7.0% over 30 years is about $37,000. That single number is what to negotiate on.
See if you can afford the mortgage
Enter price, down payment, rate and term in the Mortgage Calculator. The result shows the monthly payment including the interest split per year — if the first-year interest is more than a third of your gross monthly income, lenders will likely decline or reprice the offer.
Grow savings with compound interest
In the Compound Interest Calculator, test $500/month at 5% for 20 years: you deposit $120,000 and end near $206,000. Change the rate to 7% to see the same deposits reach $260,000 — 2 points of return is worth $40,000 here, which is why fees matter as much as savings.