Mortgage payment calculator
Estimate principal, interest, property tax, insurance, HOA, total interest, and monthly house payment.
More calculator options
Browse the full calculator library.
Find the calculator that matches your question: payments, payoff planning, trip fuel cost, percentages, unit conversions, tips, and shared bills.
Available tools
Finished calculator pages
Car payment calculator
Estimate an auto loan payment with price, down payment, trade-in, tax, fees, rate, and term.
Loan payoff calculator
Estimate payoff time, total interest, total paid, and savings from extra monthly payments.
Fuel cost calculator
Estimate total miles, gallons needed, fuel cost, and cost per person for one-way or round trips.
Metric and standard converter
Convert miles, kilometers, feet, meters, pounds, kilograms, gallons, liters, Fahrenheit, and Celsius.
Percentage calculator
Calculate percent of a number, percentage change, or what percent one number is of another.
Tip calculator
Calculate a tip amount, total bill, and even split per person for restaurants, delivery, rides, and services.
Choosing a calculator
Match the tool to the decision
Use a payment calculator when you are comparing monthly costs. Mortgage and car payment estimates are most useful when you change one input at a time, such as interest rate, down payment, or loan term.
Use the loan payoff calculator when you already have a balance and want to see whether extra payments are worth it. The key numbers are payoff time, total interest, and interest saved.
Use the fuel cost calculator before a trip or shared ride. It can estimate the fuel budget and the amount each person would pay if everyone splits gas evenly.
Use the conversion and percentage tools for quick everyday math. They are helpful for comparing units, discounts, tax estimates, bill splits, price changes, and simple planning questions.
Calculator notes
How to get better estimates
Why do the calculators use estimates?
Many real numbers depend on lenders, taxes, fees, locations, fuel prices, or personal details. The calculators are designed for planning and comparison, not final quotes.
What should I verify separately?
Verify loan terms, interest rates, tax rates, insurance, lender fees, prepayment rules, and any number that will affect a real purchase or contract.
Why are the pages separated?
Separate pages keep each calculator focused. A person estimating a house payment should not have to scroll through fuel cost, percentages, or unit conversions first.