Free calculators for buying, owning, and maintaining your car. No signup. No ads. No downloads.
Monthly payment with tax, trade-in, and total interest.
Fuel cost for any trip by distance, MPG, and gas price.
How much car you can afford based on income.
Compare 5-year cost of leasing vs buying.
Calculate your actual gas mileage from fill-ups.
Projected value year by year through year 10.
When to service your car based on mileage.
Total trip cost: gas, hotels, food, and tolls.
Estimated value based on age, mileage, condition.
Monthly premium by age, record, and coverage.
Dealer tactics, walk-away price, and financing tips.
Read →Depreciation, financing, and the sweet spot for value.
Read →Oil, tires, brakes, fluids, and what to skip.
Read →Coverage types, what you need, how to save.
Read →Every tool on this site runs entirely in your browser. No accounts, no tracking, no ads. Your numbers stay on your device.
We built these tools because car math is confusing on purpose. Dealers, lenders, and insurance companies benefit from you not understanding the numbers. These calculators put the math back in your hands.