Calculators
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Every automobile calculation
you'll ever need.
51 free calculators for every driver, buyer, enthusiast, and fleet manager—estimate loan payments, MPG, towing, EV range, depreciation, and more.
51
Free
<50ms
100%
Built for the US car market.
US rates & state taxes
Miles, gallons & MPG
100% private
Always free
Free automotive calculators to help you make smarter decisions for every vehicle need.
Mustang is an all-in-one collection of free automotive calculators designed to handle the financial and technical math of buying, owning, driving, and selling a vehicle. Instead of searching across multiple websites, you get instant access to 51 car calculators in a single hub—completely free, private, and free of sign-ups or paywalls. Because every tool runs directly in your browser, your data never leaves your device.
Car loan and financing calculators
Our most popular tool is the car loan calculator (also called an auto loan or car payment calculator). Just plug in your vehicle price, down payment, interest rate (APR), and loan term to immediately view your monthly payment, total interest, and complete amortization schedule. Combine it with the car affordability calculator to determine what fits your budget based on your income, the down payment calculator to see how putting more money upfront cuts your monthly bill, and the lease vs buy calculator to weigh leasing against financing over the same timeframe. Looking to refinance a current loan? Our car refinance and early payoff calculators reveal the exact amount of interest you can save.
Fuel, MPG, and running-cost calculators
Buying a vehicle involves much more than just the initial purchase price. Our MPG and fuel cost calculator converts your fuel efficiency and local gas rates into an exact cost per mile and monthly gas budget, while the road trip and commute cost calculators make it easy to budget for longer drives and daily travel. Finally, the total cost of ownership calculator combines gas, insurance, upkeep, taxes, and depreciation into one clear annual number—giving you the true figure you need when weighing two vehicles against each other.
Depreciation and resale value calculators
A brand-new vehicle can shed a significant portion of its worth during its first few years on the road. Our car depreciation calculator forecasts your vehicle's year-by-year residual value so you know what to expect when it's time to sell. Alongside it, the trade-in, negative equity, and mileage-vs-value calculators help you pick the right moment to sell, check if you owe more on your loan than the vehicle is currently worth, and see how odometer readings impact your resale price.
Electric vehicle and performance calculators
Considering making the switch to electric? Our EV vs gas savings calculator weighs traditional fuel expenses against charging costs over your ownership timeframe, while our EV range, charging time, and tax credit calculators help you plan every other detail of going electric. For performance fans, the horsepower, 0-60 mph, quarter-mile, and power-to-weight calculators break down vehicle speed and power into clear, straightforward metrics.
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