electric vehicle charging time, energy, efficiency and home-charging cost calculators
Model EV charging with your own battery and tariff numbers
Estimate charging energy, idealized charging time, cost and consumption without assuming one vehicle or electricity price.
Tools
Energy Needed
Estimate battery energy added between two state-of-charge levels.
Open →ToolsWall Energy with Losses
Estimate grid energy required from battery energy and assumed charging efficiency.
Open →ToolsIdealized Charge Time
Estimate charging time from grid energy and average charging power.
Open →ToolsCharging Cost
Estimate electricity cost from grid energy and your tariff.
Open →ToolsTrip Energy
Estimate driving energy from trip distance and average consumption.
Open →Guides
Calculate energy from a state-of-charge window
Battery capacity multiplied by the percentage-point increase gives battery energy added.
GuidesInclude charging losses explicitly
Energy drawn from the grid can be higher than energy stored in the battery.
GuidesWhat an average-power charge-time estimate means
Energy divided by power gives time only when power is treated as an average.
GuidesEstimate home charging cost
Use grid energy and the marginal electricity price relevant to charging.
GuidesConvert consumption into trip energy
Distance multiplied by kWh per 100 km gives an energy estimate for the route.