Fuel Calculator ⛽ - Fuel Cost Calculator (2024)

Use this fuel cost calculator to easily calculate fuel cost and the gallons / liters needed to complete a trip. Calculate gas cost or petrol cost - we support miles and gallons, liters and km, etc.

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  • Variation in fuel consumption
  • Formula for fuel amount
  • How to improve fuel economy?
  • Fuel Needed & Fuel Cost Calculations

    In order to calculate the amount of fuel for a given trip using our fuel cost calculator or otherwise, you need to know the total distance you will be covering and the expected average fuel consumption of your vehicle. It works the same way for cars, trucks, buses, vans, SUVs, and even boats and planes. If you also want to calculate the fuel cost of a trip, then you need to know the price per gallon or price per liter at which you can by.

    Our calculator supports entering distances in miles and kilometers. In terms of fuel consumption, it is very versatile as it accepts: miles per gallon, gallons per 100 miles, kilometers per liter and liters per 100 kilometers. In the US, miles per gallon and kilometers per liter would more frequently used, while in most of Europe the preferred metric would be liters to travel 100 km and gallons to cover 100 miles. The result in terms of fuel amount is in gallons or liters, and for fuel cost is in the currency you entered it in (you can simply ignore the currency sign, e.g. $ (USD)).

    Variation in fuel consumption

    Make sure to account for the variation in fuel consumption when driving within city limits and on highways - usually the consumption is higher in the former case. Always fill your tank with more fuel than you anticipate you would need, especially during winter or when driving through desolate areas or when extreme weather conditions are expected.

    Formula for fuel amount

    If you are using mpg (miles per gallon), then the formula for calculating the total amount of gas needed is:

    Fuel = Distance / Consumptionmpg

    For example, if the distance is 500 miles and consumption is 20 miles per gallon, then the fuel you will need for the entire distance is 500 / 20 = 25 gallons.

    If you are using gallons per 100 mi to measure consumption, then the formula for calculating the amount of fuel needed is:

    Fuel = Distance / 100 x Consumptionper 100 mi

    For example, if the distance is 300 miles and the consumption is 5 gallons per 100 miles, you will need 300 / 100 x 5 = 15 gallons of gas.

    Both formulas are applicable for metric units - km and liters, just make sure you do not mix metric units. Using an online fuel calculator will make sure you do not commit that mistake.

    How to improve fuel economy?

    Don't like the numbers you see when you use our tool? If you wonder how you can improve the fuel efficiency of your vehicle so you can cover more miles (or kilometers) with less fuel, we have some tips that can result in significant savings, especially when applied consistently over time. Here is our list of 10 fuel efficiency tips:

    1. Drive sensibly - If you drive aggressively - too fast compared to other cars, constantly overtaking other vehicles, and rapid acceleration followed by braking, only to accelerate again wastes a lot of gas. By some estimates, quick starts and hard stops can increase fuel consumption by more than 30%! This is why this is number one in our fuel efficiency list.
    2. Observe the speed limit - Different vehicles have optimal fuel economy at different velocities, but one way to increase gas mileage is to avoid driving at higher speeds. A small reduction of your average speed, say from 70 mph to 60 mph (equivalently: from 115 km/h to 100 km/h) can help you save 10 to 20% due to lower fuel consumption.
    3. Follow the leader - drive at about the speed of the vehicle in front of you, if they are following the first 2 tips above. This will make sure you need to accelerate and decelerate as little as possible. If possible, overtake drivers who do not follow them, as it will make it very hard for you to do so. This will result in smaller numbers from our fuel cost calculator.
    4. Check your tires - make sure your tire pressure is at optimal levels as indicated in the owner's manual provided by the auto manufacturer. If the pressure is too low your mileage will decrease significantly, not to mention that the car may become dangerous to drive.
    5. Smart routing - make sure you take optimal paths to reach your desired destination. Learn the different modes of route selection your GPS employs - the shortest is not always the fastest and idling stuck in traffic will waste fuel. Use services such as Google Maps to check for traffic congestions on the planned route. Using a route you know well can also help improve fuel efficiency, since you will know in advance where it makes sense to increase speed and where it does not, because of a traffic light just ahead.
    6. Air conditioning - turning it off will most likely improve your fuel efficiency by 10-15%, and will result in you having more power to accelerate quicker when needed. If it is necessary, make sure you do not set it to unreasonably low or high levels. Air temperature in the range between 64°F - 75°F (18°C - 24°C) is comfortable for most people. Due to the law of thermodynamics, each subsequent degree of heating or cooling requires progressively more energy to accomplish and maintain.
    7. Remove excess weight - make sure you remove any unneeded heavy items you have in your trunk. One of the untold benefits of losing weight is that your car will be a bit more efficient as well.
    8. Turn cruise control ON - when on a highway, make sure to use your cruise control option. By keeping your speed constant, it will most likely save gas and result in lower fuel costs.
    9. Avoid idling - idling means 0 miles per gallon and the larger the car engine, the more gas is wasted when idling. Avoid excessive idling, when possible, in line with point #5 above to keep fuel costs low.
    10. Maintain your vehicle - a well-maintained car, truck, van, SUV, etc. will operate at greater efficiency. Exact fuel savings are hard to calculate, as it will depend on the type of maintenance work your vehicle needs. However, good maintenance is sure to lead to fuel savings and smaller cost numbers coming out of our calculator.

    Fuel Calculator ⛽ - Fuel Cost Calculator (1)

    All the above advice is fine, but what do you do if you have been following the above advice, yet our tool still shows you numbers that are so high you want to cry? Well, it is most likely time for a new car, or it could be just the fuel price fluctuations over which, unfortunately, neither you nor we have much influence, individually. Fuel prices in most places contain license fees and other state or local government taxes, in some places reaching as much as 50% of the final price. Financial market fluctuations, natural disasters or extreme weather, crisis, as well the geographical area you are in and the local fuel suppliers all influence the price of gas. All you can do is try to observe them and predict when you can get a more decent price.

    Fuel Calculator ⛽ - Fuel Cost Calculator (2024)


    How to calculate fuel cost? ›

    Thus, the mileage of the car is 510/30 = 17 km/l. So, if Ramesh has to plan his next trip of 340 Km and the cost of the petrol is Rs. 120/litre, he can estimate the cost using the fuel cost calculator as (340/17) *120= 2400 INR, so he will keep aside a provision of Rs. 2400 for the cost of fuel during the trip.

    How do I calculate how much fuel I use? ›

    When you next fill up, note the mileage driven. Fill the tank again and note the number of litres put in. Divide the number of miles driven by the amount of fuel used in litres (miles per litre) To convert the figure to miles per gallon multiply it by 4.544.

    How to calculate gas mileage cost? ›

    You can find the fuel cost per mile by taking the current per-gallon price of gas and dividing it by your vehicle's miles per gallon.

    How to calculate how much fuel is needed for a trip? ›

    First, divide the distance of the route by your miles per gallon figure to discover how many gallons of gas you will need, then multiply the number of gallons by the price of gas.

    What is the formula for gas prices? ›

    How do I calculate fuel cost? To calculate the fuel cost, we use one of the following formulas: Fuel cost = (Distance / Efficiency per gallon) × Cost per gallon. Fuel cost = (Distance / [100 × Consumption per 100 mi]) × Cost per gallon.

    How to calculate gas usage? ›

    Take a meter reading, then subtract the previous meter reading from the new meter reading to work out the volume of gas used. Multiply by volume correction factor (1.02264). Multiply by calorific value (40.0). Divide by kWh conversion factor (3.6).

    What is the formula for mileage calculator? ›

    Mileage (MPG or L/100km) = (Total Distance Travelled) / (Total Fuel Consumed) For MPG: Mileage (MPG) = (Odometer Reading at Refill 2 – Odometer Reading at Refill 1) / Fuel Added. For L/100km: Mileage (L/100km) = (Fuel Added / Total Distance Travelled) * 100.

    How do you calculate fuel consumption in math? ›

    To keep the mathematics simple, let's say you've travelled 500km from the last fill and added 40 litres to bring the tank back to full. If you want to know the litres per 100km, you divide the number of litres by the number of 100km chunks of travel (in this case, five - 500 divided by 100).

    How do you calculate fuel value? ›

    Fuel Value Calculation

    Convert molar enthalpy of combustion to energy per gram: Divide the molar enthalpy of combustion (kJ/mol) by the molecular weight (g/mol) of the fuel. This gives you the energy content in kJ/g.

    How do you calculate cost per mile? ›

    To calculate your cost per mile, divide your total expenses for the month by the total number of miles you drove that month. For example, if your expenses totaled $3,000 and you drove 10,000 miles, your cost per mile would be $0.30.

    What is the easiest way to calculate gas mileage? ›

    The easiest way to calculate your gas mileage is to simply divide the number of miles traveled by the number of gallons of gas your vehicle took to refill. In sum, that's miles driven divided by gallons of gas used.

    How much does 1 mile of gas cost? ›

    ‍Considering the average gas price of $3.50 per gallon and an average fuel efficiency of about 25 MPG for a typical U.S. car, the cost per mile ranges from approximately 14 to 20 cents. This cost varies based on the vehicle's efficiency and engine size.

    How can I calculate fuel? ›

    A car's fuel consumption is a measure of the miles or kilometers driven per gallon or liter of fuel. If you know the distance you drove and how much fuel fits in your tank, simply divide the distance you drove by the amount of fuel you used to get your miles per gallon, or kilometers per liter.

    How do you measure fuel cost? ›

    To calculate your fuel cost, you'll need to know: The amount of fuel you use • Fuel prices So, your Fuel cost = Fuel consumption x Fuel price Fuel consumption is the amount of fuel your car uses to travel from point A to B.

    How much is miles per gallon? ›

    Miles per gallon (mpg) is a calculation of a motor vehicle's fuel economy. The simple formula is miles traveled divided by gallons of fuel consumed. Mpg is the chief fuel economy measurement for motor vehicles and the basis for ratings by the Environment Protection Agency (EPA).

    What is the formula for fuel consumption cost? ›

    How do I calculate fuel consumption per 100 km? To calculate fuel consumption per 100 km, divide the amount of fuel used in liters by the distance in kilometers and multiply the product by 100. If you want to find the fuel consumption per 10 km, perform the same first step but multiply the product by 10 instead of 100.

    How to calculate miles per gallon for a trip? ›

    The easiest way to calculate your gas mileage is to simply divide the number of miles traveled by the number of gallons of gas your vehicle took to refill. In sum, that's miles driven divided by gallons of gas used.

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