EV charging · May 2026 electricity rates
Level 2 EV Charging Cost & Time Calculator
Estimate Level 2 home EV charging time and electricity cost using a 240 V reference with adjustable charger power, battery size, and state electricity rate.
Charge-session model
Calculate charge energy, cost, and ideal time
Real charging can be slower because of vehicle limits, power sharing, battery temperature, and charge taper.
Model note
Use your vehicle's real numbers when possible
DOE AFDC says residential Level 2 units commonly use 240 V and can span a wide power range. The default here is 7.2 kW and can be changed.
U.S. DOE Alternative Fuels Data Center — Electric Vehicle Charging Stations ↗
What can change the result
Charging and driving vary
Weather, speed, cabin climate, battery conditioning, elevation, charger efficiency, and onboard-charger limits can change real energy use.
Formula used
Battery energy added = usable battery kWh × state-of-charge change. Grid energy adds charging losses. Cost = grid kWh × rate; ideal time = grid kWh ÷ charger kW.
Use the exact residential rate from your utility bill when available.