Practical guide

How to calculate EV charging cost

Battery kWh, state of charge, losses and electricity price.

Energy added to the battery

A 60 kWh usable battery charged from 20% to 80% gains 36 kWh before charging losses.

Supply energy can be higher

The charger may draw more from the supply than the battery stores. AutoCifra lets you choose a loss assumption instead of forcing one figure.

Price matters

Home and public charging can have different p/kWh prices.

Open EV charging cost calculator →


Last reviewed: 31 August 2026. See also methodology and sources.