Fuel & Efficiency
16 calculatorsFuel economy is quoted a dozen different ways depending on where you live. These calculators convert between MPG (US and Imperial), litres per 100 km, kilometres per litre and miles per litre, and translate any of them into a real cost per mile or per journey. Enter your figures once and see your efficiency in whichever unit makes sense to you.
All Fuel & Efficiency calculators
- Acceleration vs Fuel Economy TradeoffCalculate the annual fuel cost of aggressive acceleration and hard driving
- Annual Fuel Cost ProjectorCalculate your yearly petrol or diesel spend from annual miles, MPG and pump price.
- Average Fuel Price CalculatorTrack your volume-weighted average fuel price across multiple fill-ups with this pure-math calculator.
- Cost of Driving Faster CalculatorCalculate whether the extra fuel cost of driving faster is worth the time you save.
- Cruise Control Fuel SavingsCalculate annual fuel savings from using cruise control on motorway journeys.
- Fuel Cost for a JourneyCalculate the total fuel cost for a journey from distance, MPG, and fuel price per litre.
- Fuel Needed for JourneyCalculate liters, imperial gallons or US gallons of fuel needed for any journey distance and vehicle MPG.
- Hypermiling Total SavingsCalculate annual fuel savings from hypermiling techniques based on MPG improvement and mileage.
- Idle Fuel Waste CalculatorCalculate the annual cost of fuel burned while your engine idles.
- MPG Converter (UK/US/L per 100km)Convert fuel economy between imperial MPG, US MPG, and liters per 100 km with precise gallon conversions.
- MPG Improvement Savings CalculatorCalculate annual fuel savings from improved miles-per-gallon efficiency.
- Multi-Stop Fuel Cost CalculatorCalculate total fuel cost across up to three road-trip segments with different MPG and fuel prices.
- Premium vs Regular Fuel Cost-BenefitCalculate whether premium fuel pays for itself through efficiency gains at your fuel prices.
- Short Trip Cold-Engine Fuel PenaltyCalculate the annual fuel cost penalty from cold-engine short trips based on your driving mix.
- Speed vs Fuel ConsumptionCalculate how highway speed affects your fuel economy using a percentage-drop model.
- Tank Range CalculatorCalculate your vehicle's maximum driving range from tank size and fuel economy.