Car cost calculators
Three free, transparent calculators for car running cost. The fuel-cost calculator turns MPG, annual miles and a fuel price into your yearly fuel bill. The EV-vs-gas calculator finds the break-even — how long an EV's cheaper running cost takes to pay back a higher purchase price. The cost-to-own calculator adds fuel, maintenance, insurance and depreciation into a 5-year total. Every formula is shown and documented on the methodology page.
Source: EIA US regular gasoline price (national average). Data as of June 2026.
Annual fuel cost from MPG, miles and price per gallon (or EV cost from kWh/100mi).
EV vs gas break-evenHow many years/miles until an EV's fuel savings cover a higher price.
5-year cost-to-ownFuel + maintenance + insurance + depreciation over five years.