UK fuel, mileage and EV calculators
Estimate petrol and diesel journey costs, employee business mileage amounts and electric vehicle charging costs.
Choose a car & travel calculator
Fuel cost calculator UK: petrol and diesel
Estimate a trip using UK miles and imperial MPG.
Car & travelMileage allowance calculator UK 2026/27
Calculate approved employee mileage amounts for an owned vehicle.
Car & travelEV charging cost calculator UK
Estimate charging cost with your tariff and charging losses.
Car & travelAnnual car running cost calculator UK
Combine actual fuel, insurance, servicing, tax and other annual motoring costs.
Car & travelUK MPG to litres per 100 km calculator UK
Convert UK imperial miles per gallon and litres per 100 kilometres.
Car & travelCar ownership cost per mile calculator UK
Spread a known annual car ownership cost across the miles you actually drive.
Car & travelCar lease total cost calculator UK
Add the initial rental, remaining monthly rentals and stated lease fees.
Car & travelPCP total amount payable calculator UK
Separate the cash paid before a PCP balloon from the cost of keeping the car.
Car & travelCar depreciation cost calculator UK
Measure depreciation between a purchase price and an expected or observed resale value.
Car & travelEV versus petrol energy cost calculator UK
Compare electricity and petrol costs over the same mileage.
Car & travelEV charging time calculator UK
Estimate charging duration from battery energy needed and sustained charger power.
Car & travelJourney time from average speed calculator UK
Convert a route distance and actual average speed into a travel-time estimate.
Car & travelCar loan from payment budget calculator UK
Find the loan principal supported by a fixed payment, term and nominal interest rate.
Car & travelCompany car tax calculator UK (2026/27 BIK)
Estimate annual and monthly company car benefit-in-kind (BIK) tax, including electric cars and Scottish Income Tax bands.
Car & travelWhere to start
For a journey, enter total miles and UK imperial MPG. Business mileage estimates an approved tax amount rather than fuel actually used. EV charging uses battery energy, losses and the tariff you enter.
UK data and coverage
Dated national pump prices are editable references. Ofgem’s GB home electricity reference does not represent public EV chargers or Northern Ireland tariffs; use your own rate for those.
Each calculator explains the formula, includes a worked example and identifies the assumptions that can affect your result. Official rule tables and dated price references are linked on the relevant pages.
Read the data sources and calculation methodology or browse all UK calculators.