Tools that go further
These calculators are designed to answer the questions that basic fuel-cost tools often miss.
EV Break-Even Calculator
Estimate how many years energy savings could take to recover a higher EV purchase price.
Compare break-even
EV Charging Mix Calculator
Blend home, public AC and rapid-charging prices instead of assuming one electricity tariff.
Build charging mix
Real-World MPG Adjuster
Reduce an official MPG figure and see the effect on annual fuel cost.
Adjust MPG
Real Running Cost Comparator
Compare fuel or charging, insurance, tax, servicing and depreciation side by side.
Compare vehicles
Decision calculators
These tools are built around a practical question: is the cheaper-looking option actually cheaper once the hidden trade-offs are included?
Keep vs Change Car
Compare depreciation and running costs to see whether changing car really saves money.
Keep or change?
EV Tariff Break-Even
Include household daytime electricity and find the minimum off-peak charging share needed.
Check tariff
Charging Membership Break-Even
Find the monthly kWh or EV miles needed before a public-charging subscription pays for itself.
Check membership
Cheaper Fuel Detour
See whether driving farther for cheaper petrol or diesel actually leaves you better off.
Check detour
Journey Fuel Cost Calculator
Calculate petrol or diesel cost for any journey from distance, MPG and fuel price.
Open calculator
MPG Calculator
Calculate UK MPG from miles travelled and litres used.
Open calculator
Cost Per Mile Calculator
Work out fuel cost per mile from UK MPG and pump price.
Open calculator
Annual Fuel Cost Calculator
Estimate yearly petrol or diesel spend from annual mileage.
Open calculator
Commute Cost Calculator
Estimate weekly, monthly and annual commuting fuel costs.
Open calculator
Fuel Cost Split Calculator
Split a journey fuel cost fairly between passengers.
Open calculator
MPG ↔ L/100km Converter
Convert UK imperial MPG to litres per 100 km and back.
Open calculator
EV Charging Cost Calculator
Calculate the electricity cost of charging an electric car.
Open calculator
EV Charging Time Calculator
Estimate how long an EV charge will take from charger power and battery size.
Open calculator
Petrol vs EV Cost Calculator
Compare petrol fuel cost per mile with electric-car charging cost.
Open calculator
Fuel Savings Calculator
Compare annual fuel spending between two cars with different MPG.
Open calculator
Road Trip Cost Calculator
Estimate total fuel cost, return-trip cost and per-person cost for a road trip.
Open calculatorSimple UK motoring calculations
MotoringCalcs UK is designed around the figures UK drivers actually use: miles, imperial MPG, pence per litre and pence per kWh. Calculations run in your browser and do not require a paid route or fuel-price API.
For the most accurate result, use your vehicle's real-world MPG or miles-per-kWh figure and the current price you actually pay for petrol, diesel or electricity.