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Automotive Tools

Fuel economy, tires, EV charging and more. 23 free tools, no sign-up.

Fuel Cost CalculatorCalculate the fuel cost of any trip from distance, fuel economy, and gas price. Works in MPG or L/100km with instant results.MPG CalculatorCalculate your real miles per gallon from miles driven and gallons used. See the L/100km equivalent and cost per mile too.L/100km CalculatorCalculate fuel consumption in liters per 100 km from distance and liters used. See the km per liter and MPG equivalent too.MPG to L/100km ConverterConvert miles per gallon to liters per 100 km and back. Supports both US and Imperial (UK) gallons with the exact formula.US MPG to Imperial MPG ConverterConvert US MPG to UK Imperial MPG and back. Imperial gallons are larger, so the same car reads higher in UK MPG figures.Road Trip Fuel CalculatorPlan a road trip budget: enter distance, fuel economy, price, and passengers to see total fuel cost and cost per person.Cost Per Mile CalculatorCalculate the true cost per mile of driving from fuel, insurance, maintenance, and depreciation over your yearly mileage.Fuel Savings CalculatorCompare two cars by fuel economy and see the yearly and 5 year fuel savings you get from switching to the more efficient one.Miles Per Tank CalculatorCalculate how far you can drive on a full tank from your tank size and MPG, plus a safe range that keeps a fuel reserve in the tank.Car Lease vs Buy CalculatorCompare leasing and buying a car over the same period. See total cost, monthly payment, and the equity you keep by buying.Car Depreciation CalculatorEstimate how much value a car loses each year. See year by year value from purchase price and an annual depreciation rate.Tire Size CalculatorRead a tire size code like 225/45R17 and get the overall diameter, sidewall height, circumference, and revolutions per mile.Tire Size Comparison CalculatorCompare two tire sizes and see the difference in diameter, sidewall, and how much your speedometer reads off with the new size.Speedometer Error CalculatorCalculate speedometer error after a tire size change. Enter old and new tire diameters to see your true speed at any indicated reading.Gear Ratio CalculatorCalculate final drive gear ratio from ring and pinion teeth, plus engine RPM at a given speed for your tire size and gearing.Wheel Offset CalculatorCompare wheel offsets and see how far a new wheel moves in or out. Enter width and offset to find the change at the fender and hub.Engine Displacement CalculatorCalculate engine displacement from bore, stroke, and cylinder count. Get the result in cc, liters, and cubic inches at once.Horsepower Torque RPM CalculatorSolve horsepower, torque, or RPM when you know the other two. Uses the classic HP equals torque times RPM over 5252 formula.Zero to Sixty EstimatorEstimate a car 0 to 60 mph time from horsepower and weight using a power to weight model. See the power to weight ratio too.EV Charging Cost CalculatorCalculate the cost to charge an electric car from battery size, charge level, charging losses, and your electricity price per kWh.EV Charging Time CalculatorEstimate how long it takes to charge an electric car from battery size, charger power, and the charge percentage you need.EV vs Gas Cost CalculatorCompare the fuel cost of an electric car and a gas car per mile and per year, and see how much you would save by going electric.Oil Change Cost CalculatorEstimate the yearly cost of oil changes and the cost per mile from your interval, mileage, oil, filter, and labor prices.

Free car tools: fuel cost, MPG and L per 100km converters, tire size, gear ratio, lease vs buy, depreciation and EV charging calculators. Fast, client-side, no sign-up. All 23 tools are free, run entirely in your browser, and need no sign-up.

Frequently asked questions

Are these automotive tools free?

Yes. Every automotive tool on yourhack.ai is completely free, with no sign-up and no usage limits.

Do these automotive tools work on mobile?

Yes. They run in any modern web browser on phone, tablet or desktop. There is nothing to install.

Is my data private?

Yes. These tools run entirely in your browser, so nothing you enter is uploaded to a server.

How many automotive tools are there?

There are currently 23 free automotive tools here, and we add more regularly.

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