Automotive Calculators

Run the numbers on driving and car ownership: trip fuel cost, real-world mileage, horsepower-torque conversion, tire size comparison, depreciation, and everything EV — range, charging time and running cost. Plus a lease-vs-buy comparison to cut through the dealership pitch.

Fuel Cost CalculatorTrip fuel cost from distance, consumption and price. Mileage CalculatorFuel economy in mpg, km/L and L/100km. Horsepower & Torque CalculatorConvert between horsepower, torque and RPM. Tire Size CalculatorDecode tire sizes and check speedometer error. Car Depreciation CalculatorCar value over time and total depreciation. EV Range CalculatorElectric car range from battery size and efficiency. EV Charging Time CalculatorCharging time from battery, charger power and level. Lease vs Buy CalculatorCompare total cost of leasing vs buying a car.