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Free online gas cost calculator to estimate fuel expenses for commutes and road trips by MPG and gas price. Plan driving costs and compare vehicle efficiency.
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Free online carbon footprint calculator to estimate CO2 from driving, home energy, and travel. Discover ways to reduce your personal environmental impact.
Determines annual gas vehicle fuel cost based on average miles driven, fuel economy (MPG), and regional fuel price.
Gas Cost/Year = (Annual Miles ÷ MPG) × Gas Price per GallonDetermines the annual cost of charging an EV based on vehicle efficiency (kWh/100 miles) and local utility rates per kWh.
EV Charging Cost/Year = (Annual Miles ÷ 100) × kWh/100mi × Electricity Rate per kWhCalculates how many months it takes for fuel and maintenance savings to offset any higher purchase premium after tax incentives.
Payback Period (Months) = (EV Net Purchase Premium - EV Tax Credit) ÷ Monthly Fuel & Maintenance SavingsUpdated: July 2026
Replacing a 20 MPG gas SUV with a Tesla Model Y (28 kWh/100 miles), driving 18,000 miles a year.
→ SUV gas cost: $3,420/yr; EV charging cost: $806/yr; Annual savings: $2,614
Comparing a 30 MPG hybrid sedan to a compact EV in California with expensive $3.00/gallon gas and $0.32/kWh electricity rates.
→ Gas cost: $1,800/yr; EV charging cost: $1,080/yr; Annual savings: $720
Evaluating a new EV priced at a $5,000 premium over gas equivalent, utilizing the $7,500 federal incentive and saving $150/month in fuel.
→ Incentive exceeds premium instantly by $2,500; Payback is immediate with net wealth increase
Transitioning to an Electric Vehicle (EV) replaces gas costs with residential charging electricity and incorporates federal/state tax incentives. This calculator compares your current gas vehicle to an EV to show monthly fuel savings and the payback timeline.