Auto & EV Calculators
7 calculators7 free calculators for auto & ev homeowners.
Auto Loan Payoff
See how much sooner you'd be debt-free and how much interest you'd save by paying extra on your car loan. Enter your balance, payment, and APR, then add an extra monthly amount or a one-time lump sum.
Car Loan Interest Impact
See the total interest you'll pay on a car loan — not just the monthly payment — and how much a shorter term would save. Enter the price, down payment, term, and APR for a clear picture of what financing costs.
EV Battery Replacement Cost
Estimate your EV's battery health and range loss from age, climate, and charging habits using real fleet data, and see what a replacement pack costs by vehicle type. Plus why replacement is rarer than the headlines suggest.
EV Charging Cost
Estimate what it costs to charge your electric vehicle. Get your monthly charging cost, cost per mile, and yearly savings versus a comparable gas car.
EV Home Charger Installation Cost
Estimate the all-in cost to install a Level 2 EV charger at home — the charger unit plus the electrical work — based on the distance from your panel and whether a panel upgrade is needed.
EV Road Trip Charging Cost
Estimate what it costs to charge an EV on a road trip using public DC fast chargers — and compare it to charging the same trip at home and to a gas car. See why home charging is cheap but road-trip fast-charging often costs about the same as gas.
EV vs. Gas Car Cost
Compare the true cost of an EV vs a gas car — purchase, charging vs fuel, and maintenance over the years you'll own it. See the total for each and the break-even point. (No federal $7,500 credit — it ended in 2025.)
About Auto & EV Calculators
The biggest costs of owning a car are rarely the ones on the sticker. Financing adds thousands in interest on top of the purchase price, an EV's "fuel" cost depends entirely on your electricity rate and where you charge, and the gap between a loan's monthly payment and its true total cost is where most buyers lose money. These calculators put those hidden numbers in front of you before you commit.
Whether you're weighing a car loan, sizing up the running cost of an electric vehicle, or comparing the long-term math of gas versus electric, the goal here is the same: trade vague monthly-payment thinking for the total cost of the decision. Each tool uses the same formulas lenders, utilities, and manufacturers use, so the figures you see match what you'll actually pay. Use them to pressure-test a dealer quote, decide how much to put down, or figure out whether a shorter loan term or a home charger pays for itself.
The more of the real cost you can see up front, the better positioned you are to negotiate — or to walk away from a deal that doesn't add up.