Car calculators
Running costs, performance and maintenance — comparing a trip against another mode, or one car against another over the time you actually plan to keep it. Fuel is rarely the biggest line: depreciation, insurance and servicing usually cost more per kilometre.
Car affordability calculatorFind a sensible monthly and yearly car budget from your income.Car depreciation calculatorEstimate a car's residual value after several years.Car lease calculatorEstimate a monthly car lease payment from price, down payment and residual value.Car CO₂ emissions calculatorEstimate the CO₂ your car emits over a distance from its emission factor.Cost per mile calculatorCompute your total driving cost per mile and per kilometre.Engine Compression Ratio CalculatorStatic compression ratio from bore, stroke and chamber volume, with gasket and piston corrections.
Performance (2)
Tire Pressure Temperature GuideAdjust cold tire pressure for a change in ambient temperature using the ideal-gas law.Tire Size CalculatorDecode a tire code like 205/55 R16 into overall diameter, circumference and revolutions per kilometre.Tire Tread Wear CalculatorEstimate your tyre wear rate from two tread measurements or a known rate, then the distance and months left before the 2/32 in (1.6 mm) legal limit.