FormatCalc library
Finance
without the noise.
Compare loan payments, extra-payment interest savings, payoff goals, amortization schedules, refinancing, investment growth, and returns with visible starting values. These calculators are planning aids and do not include every fee, tax, product rule, or personal financial consideration. Choose a tool below to get started—no account required.
Mortgage Calculator
Estimate principal-and-interest mortgage payments after a down payment.
Loan Calculator
Calculate payment totals and interest for a loan.
Compound Interest Calculator
See how an investment can grow with different compounding schedules.
ROI Calculator
Calculate return on investment as a percentage.
CAGR Calculator
Calculate the annualized return of an investment.
Extra Loan Payment & Interest Savings Calculator
Compare regular payments with extra monthly or lump-sum principal payments to see interest savings and months saved.
Loan Payoff Calculator
Find how long a loan takes to repay with your chosen monthly payment, including total interest and the final payment.
Loan Payoff Goal Calculator
Calculate the monthly payment needed to clear a loan within your target number of months.
Loan Amortization Schedule Calculator
Generate a month-by-month payment schedule showing principal, interest, and the remaining balance, with optional extra payments.
Loan Refinance Comparison Calculator
Compare current and refinanced loan payments, interest, and lifetime savings after upfront refinance fees.