Your everyday numbers
Charging, explained.
Your spend. Your week. Your charging speed.
What does £5 get you?
Example price: 26.32p per electricity unit
Your £5 buys about 19 electricity units. Your bill calls these kWh.
Example cars: 3.5 miles per battery unit · 45 UK mpg · 10% charging loss. Energy costs only. Change the figures below.
Change the car or prices
We start with an example electric car doing 3.5 miles per battery unit, a fuel car doing 45 UK miles per gallon, and 10% of bought electricity lost while charging. These are editable assumptions, not national averages. Cold weather, speed and the car itself affect the result.
Buying electricity units is different from adding battery percentage. This compares energy for driving; it does not predict a full-battery charge. Standing charges, parking, subscriptions, installation and other car costs are excluded.
Where the prices come from
Ofgem average for Direct Debit customers in Great Britain, October–December 2026. Regional rates vary. Standing charge excluded. Checked 26 October 2026. Check the electricity source ↗
Fuel uses the UK average for the week beginning 26 October 2026. Local prices vary. Check the fuel source ↗
Named examples are checked when the tool loads. If a check is unavailable, we keep the dated saved figure. Shared links keep your choices and any prices you entered; named example prices may change when reopened.
Thinking about a charger at home?
Make my free home charging plan →Want the yearly picture? Compare a year of driving →