How to use the EV Charging Time Calculator

Estimate EV charging duration based on battery capacity, state-of-charge change and charger power.

Calculation formula

Estimated charging hours = [battery capacity × (target% − start%)/100] ÷ (charger kW × efficiency).

Recommended steps

1. Enter values using the units shown beside each field.
2. Review whether the example assumptions match your situation.
3. Run the calculator and compare the key metrics.
4. Use the source data or official rates when precision matters.

Known limitations

Charging speed is not constant; car limits, thermal management and charge taper can extend actual time, especially above 80%.