Mortgage Calculator
Estimate monthly home loan payments with principal, interest, taxes, insurance, and HOA dues.
- Compare 15-year and 30-year terms
- Include annual taxes and insurance
Tools library
Free Financial Calculators for Loans, Debt, Savings, Retirement, and Budgeting
Use these browser-based calculators to estimate payments, compare borrowing costs, plan debt payoff, set savings goals, check retirement projections, and build a monthly budget.
Biweekly Mortgage Calculator
Compare monthly mortgage payments with accelerated biweekly payments and interest savings.
- Estimate half-payments
- See payoff time saved
Extra Mortgage Payment Calculator
See how extra monthly principal payments may shorten payoff time and lower interest.
- Model extra principal
- Estimate interest savings
Loan Calculator
Find the monthly payment and total interest for a personal or installment loan.
- Switch between years and months
- See total interest and total paid
Auto Loan Calculator
Estimate car payments with price, down payment, trade-in, sales tax, fees, rate, and term.
- Include tax and fees
- Compare auto loan terms
Debt Payoff Calculator
Estimate payoff time, total interest, and the effect of making extra monthly payments.
- Model extra monthly payments
- Check when interest is too high
Credit Card Payoff Calculator
Estimate a credit card debt-free date, total interest, and savings from extra payments.
- Compare minimum vs extra payments
- Estimate payoff date
Debt-to-Income DTI Calculator
Calculate housing DTI and total DTI from monthly income and required debt payments.
- Front-end and back-end DTI
- Common ratio references
Compound Interest Calculator
Project compound interest growth for savings, investment planning, or long-term goals.
- Add monthly contributions
- Choose compound frequency
Savings Goal Calculator
Estimate how long it may take to reach a goal and the monthly amount needed for a target date.
- Time to goal
- Needed monthly savings
Emergency Fund Calculator
Estimate an emergency fund target from essential expenses, savings, and months of coverage.
- Compare 3, 6, and 9 months
- Estimate remaining gap
Retirement Calculator
Project retirement savings and a simple 4% income estimate from age, savings, and contributions.
- Estimate future balance
- Compare income target
ROI Calculator
Calculate net gain or loss, ROI, and annualized ROI from cost, ending value, and time held.
- Total ROI
- Annualized ROI
Budget Planner Calculator
Build a monthly budget from income, expenses, planned savings, and category totals.
- Surplus or shortfall
- Needs, wants, and savings mix
Choose by goal
Start with the Decision in Front of You
Each calculator is tuned for one practical question, so you can move from a rough estimate to a better comparison without extra setup.
Planning guide
How to Use the Financial Calculators
ToolNestFinance calculators are built to help you answer common money questions before you compare lenders, shop for a home, make extra debt payments, or plan a savings goal. Start with the calculator that matches your question, enter the numbers you already know, then adjust one input at a time to see how the result changes.
The loan and mortgage calculators are useful for estimating monthly payments and total borrowing costs. The debt and credit card calculators can show how extra payments may shorten a payoff timeline, while the savings, emergency fund, retirement, ROI, and budget calculators help with longer-term planning. Results are estimates, so use them as a starting point and confirm important numbers with a lender, servicer, or financial professional.