Choose the charging question you need to answer
Use the charging cost calculator to estimate the electricity bought for a session or a year of driving. Enter the tariff you actually pay, the usable battery capacity and the charge levels. The result separates energy stored in the battery from energy drawn from the supply.
Use the charging time calculator when planning how long the car will be plugged in. Match the charger to the vehicle’s AC or DC limit. The advertised peak power is a limit, not a promise that the car will use it throughout the session.
Compare home and public charging fairly
Write down the per-kWh tariff, any session or parking fee, and the hours when a cheaper rate applies. Compare the same amount of energy and include charging losses. Monthly and annual figures depend on your driving distance; they are not the price of charging a full battery every day.
For a used EV, ask which charging cables are included and whether both AC and DC charging have been demonstrated. Confirm the exact vehicle version in its documents before using a model reference. Read the guides below for the assumptions behind a useful comparison.