EV Charging Cost Calculator
Estimate energy drawn from the charger and the cost of an electric-car trip. Keep charging losses separate from driving consumption.
Your result
- Estimated charging cost
- $18.00
- Energy drawn from charger (kWh)
- 60
- Driving energy (kWh)
- 54
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Formula
Driving energy = distance × consumption ÷ 100; charger energy = driving energy ÷ (1 − loss ÷ 100); cost = charger energy × price per kWh.
Worked example
The initial example uses the following assumptions. Its result is computed by the same engine as the calculator. Measurements are metric and money amounts use USD; these are illustrative inputs, not market prices.
- Trip distance
- 300 km
- Driving energy consumption
- 18 kWh/100 km
- Electricity price per kWh
- 0.3
- Charging energy lost (%)
- 10
- Estimated charging cost: $18.00
- Energy drawn from charger (kWh): 60
- Driving energy (kWh): 54
Assumptions and limitations
Loss is the share of input energy that does not reach the battery. Set it to zero if your consumption already measures energy at the meter. Session, parking and time fees are excluded.
Questions about this calculation
Why divide by one minus the loss?
If 10% of input is lost, 90% reaches the battery. Delivering 54 kWh therefore requires 60 kWh of input.
Does this use a live tariff?
No. Enter your per-kWh price and consider other fees separately.
Useful next steps
- Fuel Cost Calculator
Estimate trip fuel and cost from distance, consumption and your fuel price. Switch explicitly between litres and US or UK gallons.
- Road Trip Cost Calculator
Build a road trip budget with fuel, tolls, parking and accommodation. Compare the whole-trip cost with each traveller's share.