Understand the numbers before you borrow.
Free, easy-to-use calculators for mortgages, auto loans, personal loans, refinancing, debt payoff and more. Run the numbers and compare your options in seconds.
Mortgage Calculator
Estimate a monthly mortgage payment and see how principal, interest, taxes, insurance and other housing costs can affect the total.
Start with a calculator
Explore some of the most commonly used LoanMathWorks calculators for borrowing, repayment and interest.
Mortgage Calculator
Estimate monthly mortgage payments and total borrowing costs.
Mortgage Affordability
Explore how income, debts and housing costs can affect affordability.
Auto Loan Calculator
Estimate monthly car payments, interest and total loan cost.
Personal Loan Calculator
Estimate payments and interest for a personal installment loan.
Debt Payoff Calculator
See how payment amounts can affect your estimated payoff timeline.
Compound Interest Calculator
Explore how principal, rates, time and contributions can compound.
Find the right tool for your numbers
Browse calculators by category to focus on the type of financial question you're working through.
Mortgage Calculators
Explore home financing, affordability, amortization, refinancing and payoff scenarios.
- Mortgage payments
- Affordability
- Amortization
- Refinancing
Auto Loan Calculators
Estimate vehicle payments and compare financing and ownership scenarios.
- Auto loan payments
- Affordability
- Early payoff
- Lease vs. buy
Personal Loan Calculators
Calculate loan payments and explore debt repayment and DTI.
- Personal loan payments
- Loan payments
- Debt payoff
- Debt-to-income
Debt & Interest
Understand APR, interest calculations and borrowing comparisons.
- APR
- Simple interest
- Compound interest
- Loan comparisons
Run the numbers in three steps
LoanMathWorks calculators are designed to make financial estimates easier to explore without unnecessary complexity.
Enter your numbers
Add the loan amount, rate, term or other assumptions requested by the calculator.
Review the estimate
See payments, interest, payoff timing or other results based on the information entered.
Compare scenarios
Change the assumptions to see how different rates, terms or payments affect the numbers.
More than a number on a screen.
Along with calculator results, LoanMathWorks provides educational explanations designed to help you understand what the numbers mean and what assumptions may affect them.
Ready to run the numbers?
Browse all LoanMathWorks calculators and choose the tool that matches the question you're working through.
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