How to use the EV Charging Cost Calculator
Estimate electricity drawn and charging bill for an EV state-of-charge increase.
Calculation formula
Battery energy added = capacity × (target SOC − start SOC)/100; electricity drawn = battery energy added ÷ charging efficiency; cost = drawn energy × energy price.
Recommended steps
- Enter values using the units shown beside each field.
- Review whether the example assumptions match your situation.
- Run the calculator and compare the key metrics.
- Use the source data or official rates when precision matters.
Known limitations
Assumes target SOC is at least start SOC, constant charging efficiency and a fixed electricity rate; excludes demand/idle fees.
Open the calculator →