EV Charging Cost, Time & Range

Calculate the cost, time and range added when charging an electric car, and compare with petrol per 100 km, free online.

Battery capacity (kWh)

Start charge (%)

End charge (%)

Charger power (kW)

Electricity price per kWh

Consumption (kWh per 100 km)

Petrol car for comparison (L per 100 km)

Petrol price per litre

About this calculator

Energy to add = battery capacity × (end % − start %) ÷ charging efficiency (≈ 90% AC). Time = energy ÷ charger power (slower above 80%). Cost = energy × electricity price. Compare with petrol: litres per 100 km × fuel price.