EV charging · May 2026 electricity rates
Level 1 EV Charging Cost & Time Calculator
Estimate Level 1 EV charging time and electricity cost using a 120 V home-charging reference and adjustable battery, state of charge, and utility 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 materials describe Level 1 as 120 V charging. A 1.9 kW reference is used here, but actual portable EVSE and vehicle input limits vary.
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.