EV Energy Calculators
Free electrical unit converters for EV owners and enthusiasts. All calculations are instant, accurate, and include real-world EV examples.
kWh = (W × H) ÷ 1,000
Watts to kWh
Convert charging power × time to energy delivered.
kWh = kW × H
kW to kWh
Multiply charging rate by hours for total energy.
W = (kWh ÷ H) × 1,000
kWh to Watts
Find required charger power from battery size and time.
kWh = (Ah × V) ÷ 1,000
Amp-Hours to kWh
Convert battery capacity in amp-hours at any voltage.
kWh = (A × V × H) ÷ 1,000
Amps to kWh
Calculate energy from charger amps, voltage, and time.