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Cars & mobility

Electric car charging cost

Electric car charging cost: enter your values and get an instant free result.

Your result

Complete the fields and calculate.

Calculation method and formula

Battery capacity [kWh] × (Target charge [%] − Starting charge [%]) ÷ 100 ÷ (1 − Charging losses [%] ÷ 100) × Price per kWh

Understand the inputs

Battery capacity
Unit: kWh. Use a measured value or your own assumption.
Starting charge
Unit: %. Use a measured value or your own assumption.
Target charge
Unit: %. Use a measured value or your own assumption.
Charging losses
Unit: %. Use a measured value or your own assumption.
Price per kWh
Use a measured value or your own assumption.

Assumptions and limitations

Loss is a share of grid energy: grid energy = usable battery energy ÷ (1 − loss share). A 10% loss means 90% efficiency. Temperature and charge state can change actual losses.

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

Worked example

Illustrative values. Replace them with your own inputs for your calculation.

Battery capacity
60 kWh
Starting charge
20 %
Target charge
80 %
Charging losses
10 %
Price per kWh
0.45
Example result18

From the grid: about 40 kWh.

Model revision: October 17, 2026 · How CleverCalc works

FAQ

Frequently asked questions

How does Electric car charging cost work?+

Battery capacity [kWh] × (Target charge [%] − Starting charge [%]) ÷ 100 ÷ (1 − Charging losses [%] ÷ 100) × Price per kWh. Loss is a share of grid energy: grid energy = usable battery energy ÷ (1 − loss share). A 10% loss means 90% efficiency. Temperature and charge state can change actual losses.

What assumptions should I consider for this result?+

Loss is a share of grid energy: grid energy = usable battery energy ÷ (1 − loss share). A 10% loss means 90% efficiency. Temperature and charge state can change actual losses. The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

How accurate is the result?+

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation. Prices, measurements and model assumptions determine how well the result represents your situation.

Is this calculator free?+

Yes. Calculations and PDF export work without an account or registration.

What happens to my inputs?+

Calculations run in your browser. Results are saved locally only when you add them to My results; favourites and history are also local. Shared links contain your values. The currency tool requests the selected currencies from its rate provider without sending your amount.

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