MotoringCalcs UK provides browser-based calculators for UK drivers, with an emphasis on decision tools that include the trade-offs basic calculators miss — from whole-home EV tariff break-even and charging memberships to whether changing car or driving farther for cheaper fuel is actually worthwhile.
The calculators use the figures UK motorists commonly see: miles, imperial MPG, pence per litre and pence per kWh. They are estimates for planning and comparison, not financial or engineering advice.