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EV charging cost calculator

See what you pay for each charge, per 100 km and per month, at home or at a public charger. Charging losses are included.

Published: · Last reviewed:

Inputs

Price presets

Part of the energy is lost as heat while charging. 90 % is a common estimate for home AC charging; check your charger’s data if you have it.

Result

How it is calculated

Energy into the battery = usable capacity × (end % − start %). You pay for a bit more, because some energy is lost while charging: grid energy = battery energy / charging efficiency. Cost is that energy times the price per kWh.

Cost per 100 km = consumption (kWh/100 km) / efficiency × price. The consumption shown by the car’s trip computer is usually measured at the battery, so efficiency should be applied.

The home price preset is Spain’s regulated PVPC tariff for today. Anywhere else, type your own tariff in €/kWh.

Limitations

  • The home preset excludes VAT, electricity tax and the fixed power charge. Your real price per kWh depends on your contract.
  • Public charging prices are examples; each operator sets its own rates, sometimes with subscriptions or per-minute fees.
  • Charging efficiency varies with power, temperature and the car.

Sources

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