EV trip cost formula
For a 250-mile trip in an EV rated at 30 kWh per 100 miles, base energy use is about 75 kWh. With 10% charging loss and electricity at $0.17/kWh, the trip costs about $14.03.
Charging estimate
Estimate the charging cost for an electric vehicle trip. Use distance, EV efficiency, electricity price, and charging loss to see kWh used and expected cost.
For a 250-mile trip in an EV rated at 30 kWh per 100 miles, base energy use is about 75 kWh. With 10% charging loss and electricity at $0.17/kWh, the trip costs about $14.03.
EV trip estimates change quickly when the charging price changes. Home charging is often the cheapest assumption, while DC fast charging can be much higher. For road trips, use the price you expect at public chargers, not only your home electricity rate.
To compare fairly with gasoline, include the same road extras on both sides: tolls, parking, ferry fees, and any route-specific charges.
Separate energy price from energy use. Charger price can vary by network, membership, location, time, or session fee, while vehicle energy use changes with speed, weather, elevation, tires, cargo, and cabin conditioning. Use the charger price shown for the stops you expect and an efficiency value that reflects highway driving.
The U.S. Department of Energy's Alternative Fuels Data Center explains charging levels and station planning. The focused calculator supports miles or kilometers and adds charging loss so the output represents energy drawn from the charger rather than only battery energy.
Use your vehicle dashboard average, EPA efficiency, or a conservative estimate from recent similar trips. Cold weather and high speed usually increase energy use.
No. This page estimates energy cost, not stop time. Use route-planning tools for charger stops and charging duration.