Donaldson R F Free Automotive Tools
Fuel cost, tyre size, braking distance, charging and other car calculators.
8 free tools in this category. No sign-up, no limits.
Car Depreciation Calculator
Estimate a car's value over time.
Open tool →Lease vs Buy Calculator
Compare the total cost of leasing versus buying a car.
Open tool →Tire Size Calculator
Compare two tire sizes and see the difference.
Open tool →Braking & Stopping Distance Calculator
Reaction, braking and total stopping distance by speed, road surface and slope.
Open tool →MPG Converter
Convert UK mpg, US mpg, litres per 100 km and km per litre.
Open tool →UK Number Plate Age Checker
See when a UK plate was issued from its age identifier or year letter.
Open tool →EV Charging Cost & Time Calculator
Work out how much it costs and how long it takes to charge an electric car, from battery size, charger power and your tariff.
Open tool →EV vs Petrol Break-Even Calculator
See how many miles or years it takes an electric car's lower running costs to pay back a higher purchase price.
Open tool →