Loan & Mortgage Calculators
Whatever you are borrowing for, the maths is the same underneath: an amount, a rate and a term produce a monthly payment and a total interest cost. These calculators handle each borrowing situation, and this page helps you pick the right one.
The single most useful habit when borrowing is to compare the total interest, not just the monthly payment. A lower payment stretched over a longer term almost always costs more overall — the tools here make that trade-off visible so a comfortable payment does not hide an expensive loan.
Start with the calculator that matches your situation below. They share the same amortization engine, so once you understand one, the rest read the same way — and the guides at the end explain the concepts in depth.
Which calculator should I use?
- Mortgage Calculator Buying a home — full payment with tax, insurance, PMI and a schedule. Open calculator →
- Loan Calculator Any fixed-rate loan — payment, total interest and payoff. Open calculator →
- Auto Loan Calculator Buying a car — includes down payment, trade-in, tax and fees. Open calculator →
- Amortization Calculator See how each payment splits between principal and interest. Open calculator →
- Payment Calculator Solve for the payment, or how long a set payment takes to clear. Open calculator →
- Interest Rate Calculator Only quoted a monthly payment? Find the interest rate hidden in it. Open calculator →
- Credit Card Payoff Calculator Clearing card debt — payoff time and the interest it costs. Open calculator →
- Home Equity Loan Calculator Borrowing against your home — borrowing power and payment. Open calculator →
Reference tables
At-a-glance tables you can cite, print or embed — computed from the same formulas as the calculators.
- Mortgage payment table Monthly principal-and-interest payment per $100,000 of mortgage, for every interest rate from 3% to 8% across 10, 15, 20 and 30-year terms. View the table →
- Loan payment table Monthly payment per $1,000 borrowed for auto and personal loans, across interest rates from 4% to 15% and terms from 12 to 72 months. View the table →
Guides on this topic
- How Loans and Interest Really Work A complete, jargon-free guide to borrowing — interest vs. APR, simple vs. compound, amortization, the main loan types, and how to pay less over the life of a loan.
- How Much House Can You Afford? A practical, plain-English guide to figuring out a home price you can comfortably afford — using the 28/36 rule, down payments and the true cost of a mortgage.
- Getting the Best Auto Loan How car financing really works — the true cost beyond the sticker price, why loan term matters so much, and how down payments and trade-ins change the math.
- Rent vs. Buy a Home: How to Decide A complete framework for the rent-or-buy decision — the true costs of each, the break-even horizon, opportunity cost, and how to run your own numbers.