EV Charging Cost Calculator
Work out what it costs to charge your electric car.
Charging cost
£13.07
- Energy into battery
- 48 kWh
- Energy drawn
- 53.3 kWh
Assumes 10% charging losses.
v1.0 · Reviewed September 2026
How this is worked out
Energy into the battery is capacity × the percentage added. That is divided by 0.9 to allow for 10% charging losses, then multiplied by the price per kWh.
Worked example
- 60 kWh battery
- 80% added
- 24.5p per kWh
48 kWh into the battery, 53.3 kWh drawn, × 24.5p
£13.07
Assumptions and limits
- Assumes 10% charging losses. Home AC charging is often a little better, and cold-weather or rapid DC charging noticeably worse.
- Uses one flat price per kWh, so an overnight EV tariff needs its off-peak rate entered rather than the day rate.
- Uses the battery figure you enter. Usable capacity is normally a few kWh below the headline size.