Auto calculators
A car is one of the biggest purchases most people make, and the sticker price is only the start. These tools help you shop within a budget, weigh leasing against buying, and see the real cost of fuel, depreciation, and ownership over the years you'll drive it.
Car Affordability Calculator
See the car price your budget supports.
CalculateCar Lease Calculator
Estimate a monthly lease payment.
CalculateEV vs. Gas Cost Calculator
Charge vs. fill-up, year by year.
CalculateFuel Cost Calculator
What a drive costs in fuel.
CalculateLease vs. Buy Calculator
Compare the true cost of leasing and buying.
CalculateRoad Trip Cost Calculator
Budget a trip, split per person.
CalculateTotal Cost of Car Ownership Calculator
The real cost, not just the sticker.
CalculateTrade-In Equity Calculator
Equity or underwater on your car?
CalculateVehicle Depreciation Calculator
See how fast a car loses value.
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Frequently asked questions
Are NumberPilot's calculators free to use?
Yes. Every calculator on NumberPilot is completely free, with no signup, account, or subscription required. There are no usage limits.
Do you store the numbers I enter?
No. All calculations run entirely in your browser. The values you type are never sent to our servers. Optionally, we save only the names of calculators you've used in your browser's local storage so we can show a 'recently used' list — you can clear this anytime.
How accurate are the results?
Our calculators use standard, well-established financial formulas and are unit-tested for accuracy across a wide range of inputs. That said, results are estimates for educational purposes and don't account for every real-world variable, so they shouldn't be treated as financial, tax, or legal advice.
Can I use NumberPilot on my phone?
Absolutely. NumberPilot is built mobile-first and works smoothly on phones, tablets, and desktops, with fast load times and responsive layouts.
Will you add more calculators?
Yes. NumberPilot is built on a scalable architecture designed to grow into hundreds of calculators across loans, mortgages, investing, retirement, salary, credit, and everyday math.