Which calculator do I need?
| Question | Calculator |
|---|---|
| Will bigger wheels or tires fit, and how far off is my speedometer? | Tire size |
| How many miles per gallon does my car really get? | Gas mileage |
| How much gas will a road trip cost? | Trip fuel cost |
| What does it cost to charge my electric car? | EV charging |
| What will my monthly car payment be? | Car loan |
| What will a motorcycle loan cost? | Motorcycle loan |
| How much will my car be worth in a few years? | Depreciation |
| What will a lease cost me each month? | Car lease |
| How much car can I afford on my income? | Affordability |
| Will refinancing my car loan save money? | Auto refinance |
| What is the payment on an RV or camper? | RV loan |
| How much should I be reimbursed for business miles? | Mileage |
| What gears do I need for bigger tires? | Gear ratio |
| How much sales tax will I pay on a car in my state? | Sales tax |
| Is it cheaper to lease or buy this car? | Lease vs buy |
| What does my car really cost per mile? | Cost per mile |
Why the numbers matter
Fuel, financing and depreciation are the three biggest costs of owning a car, and most drivers only guess at them. A wrong tire size can throw off your speedometer and odometer, and a loan that looks cheap per month can cost thousands more in interest. Every calculator here shows its formula so you can check the math yourself.