Fuel consumption calculator
For average consumption from travelled distance and fuel used.
12 tools
Car calculators
Car calculations from measurements and stated assumptions: fuel consumption, power-to-weight, trip cost, and the relation between speed, distance and time. Power-to-weight accepts PS or kW; the quarter-mile estimate uses mechanical hp. Check each tool’s units and limits: measured values and model coefficients are different inputs.
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Residual value of a car after several years of ownership.
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Fuel consumption calculator
Litres per 100 km from a fill-up, or the fuel a trip will need.
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Gas oil mix ratio calculator
How much oil to add to petrol at a 1:N ratio.
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Power to weight ratio calculator
Specific power in kW per tonne, hp per tonne and kg per hp.
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Quarter mile time calculator
Quarter mile elapsed time and trap speed from engine power and vehicle mass.
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Speed distance time calculator
Find speed, distance or time from the other two.
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Stopping distance calculator
Total stopping distance: reaction plus braking.
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Tire size calculator
Overall diameter, sidewall height and revolutions per kilometre from a tire code.
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Trip cost calculator
Fuel and tolls for a journey, split between passengers.
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Wheel offset calculator
Offset ET, backspacing and how far the wheel moves.
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Which calculation to choose
Trip cost calculator
For route fuel cost from distance, consumption and an entered fuel price.
What to prepare
Use the complete route distance, consistent fuel units and current price per unit. Include the return leg if needed.
Common mistake
Litres per 100 km and kilometres per litre are reciprocal measures. Fuel cost is not the full cost of owning a car.
Popular calculators
New calculators
FAQ
Which horsepower is used?
Power-to-weight accepts metric PS or kW; 1 PS = 735.49875 W. The quarter-mile estimate requires mechanical hp. These are different units: check the particular field label and your original power figure.
How is consumption different from a unit converter?
Fuel consumption uses the litres and kilometres entered and offers the directions listed on its page. A separate fuel-economy converter converts L/100 km and US or imperial mpg.
Are driving style and terrain taken into account?
Fuel use and trip cost do not infer driving style automatically; use suitable measurements. Stopping distance has separate friction and grade inputs. Only the particular tool’s inputs and assumptions are included.
Does trip cost include depreciation?
No, only fuel and tolls. Wear, tax and servicing are outside the calculation.
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