Calculators

22 free personal-finance calculators in three categories. All math runs in your browser. No accounts.

Financing

What the car really costs to borrow.

Loan payment, lease vs buy, what you can actually afford, and what extra payments save you.

11 calculators →
Running Costs

What it costs to keep it on the road.

Fuel, charging, the full cost of ownership, and business-mile reimbursement.

6 calculators →
The Car Itself

Depreciation, EV math, tires, towing.

What the car is worth over time, gas vs electric, and the physical-spec math most owners get wrong.

5 calculators →

Or scan the full list of 22 calculators on a single page.