The total cost of driving from Rockville, MD to IAD (one-way) is $3.39 at current gas prices.
The round trip cost would be $6.78 to go from Rockville, MD to IAD and back to Rockville, MD again.
Regular fuel costs are around $3.14 per gallon for your trip. This calculation assumes that your vehicle gets an average gas mileage of 25 mpg for a mix of city and highway driving.
All currency units are U.S. Dollars. If you prefer international units, the equivalent petrol pump price is 83.0 cents/litre. This assumes a typical fuel economy of 9.4 L/100 km.
You'll go through 1.1 gallons of gas during this trip. This is equal to 4.1 litres.
If you fill your tank with unleaded gasoline, the carbon emissions will be around 21 lbs CO2. This is equivalent to 10 kg CO2e or 0.01 tonnes of carbon dioxide equivalents. These numbers may change depending on the exact make and model of your car. If your vehicle uses diesel instead, the CO2 emissions will be around 25 lbs CO2, which is equivalent to 11 kg CO2e or 0.01 tonnes of carbon dioxide equivalents.
These results are based on the actual driving distance from Rockville, MD to IAD, which is 27 miles or 43 kilometers.
Your trip begins in Rockville, Maryland. The price of regular gas is currently averaging $3.30 in Maryland.
Your trip ends at Washington Dulles International Airport in Dulles, Virginia. The price of regular gas is around $2.99 in Virginia.
Currently, we only have exact data for locations in the United States. To improve the accuracy of your fuel cost estimate, you can enter the actual price you pay for gas or petrol at the local pump in the table above.
The following chart displays the difference in total cost of driving given varying fuel grades. If your car requires higher octane gas, you can find out how much more it will cost you to drive between Rockville, MD and IAD.
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Travelmath provides an online driving cost calculator to help you determine how much you'll spend on gas for your next road trip. You can enter airports, cities, states, countries, or zip codes to compute the cost of driving between locations. Driving distances are calculated using actual driving directions if they are available, or a GPS-accurate method for the straight line distance. Automatic estimates are provided for local gas prices and vehicle fuel efficiency in miles per gallon (mpg) or liters per 100 kilometers (L/100 km), based on the make and model of your car, SUV, or minivan. Don't let the economy and rising oil prices stop you from taking your next trip. You can use this tool to find out if it's cheaper to fly or drive to your destination.