What does this tool do?
Electric running costs come down to energy used and the price per kilowatt-hour. This calculator accounts for charging losses, then shows the trip cost, cost per kilometre and cost per 100 km.
The Formula
Energy = Distance × (kWh per 100 km ÷ 100) × (1 + charging loss); Cost = Energy × Price per kWhFrequently Asked Questions
What efficiency should I enter for an EV?
Most modern electric cars use about 15–20 kWh per 100 km in mixed driving. Larger vehicles and cold weather push consumption higher.
Why include charging losses?
Some energy is lost as heat in the charger and battery, so the meter draws more than the car uses. A 5–15% allowance is typical for home charging.