Electric

EV charging time calculator

Estimate EV charging duration from battery size, charge window, effective charger power and efficiency.

Enter your figures

The calculation runs on your device. Change any value and calculate again.

Energy to add
Theoretical time

Idealised estimate

Real charging power can taper as the battery fills and can also be limited by the car, charger or conditions.

Formula

Time ≈ energy to add ÷ (effective kW × efficiency)