Calculate Gas Cost for Your Trip

Find out how much gas your vehicle will use and estimate the total cost of your journey in seconds.

Gas Cost Calculator

Enter your trip information below to calculate your estimated gas cost.

Distance in kilometers
Liters per 100 km
Price per liter/gallon
Optional - used to calculate cost per passenger

Your Trip Estimate

0 Liters of gas
$0.00 Estimated gas cost
$0.00 Cost per kilometer
$0.00 Cost per passenger
Calculation will appear here.
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How to Calculate Gas Cost

Calculating gas cost for a road trip is simple when you know your travel distance, vehicle fuel economy and the current gas price.

First, determine how much fuel your vehicle is expected to use. Then multiply the estimated fuel consumption by the price of gas.

Gas Cost = Gas Used × Gas Price

For vehicles measured in MPG

Gas Used = Distance ÷ MPG

For vehicles measured in liters per 100 km

Gas Used = Distance × (Liters per 100 km ÷ 100)

The result is an estimate. Actual fuel consumption can vary depending on driving speed, traffic, weather, vehicle load, tire pressure and driving conditions.

Why Calculate Gas Before a Road Trip?

Knowing your estimated gas cost can make trip planning easier. You can estimate your transportation budget before leaving home and compare the cost of driving with other travel options.

01

Plan Your Budget

Estimate the fuel portion of your travel expenses before starting your journey.

02

Estimate Fuel Usage

Find out approximately how much gasoline or diesel your vehicle may consume.

03

Share Trip Costs

Calculate an estimated fuel cost per passenger when traveling with friends or family.

Calculate Gas Mileage

Gas mileage describes how far your vehicle can travel using a certain amount of fuel. In the United States, vehicle fuel economy is commonly expressed in miles per gallon (MPG).

For example, if a vehicle travels 300 miles and uses 10 gallons of gas, its fuel economy is:

300 miles ÷ 10 gallons = 30 MPG

Higher MPG generally means that a vehicle uses less gasoline to travel the same distance.

Tips to Reduce Gas Costs

Your actual fuel consumption can change depending on how and where you drive. The following general practices may help reduce unnecessary fuel consumption.

  • Maintain the recommended tire pressure.
  • Avoid unnecessary rapid acceleration and braking.
  • Keep your vehicle properly maintained.
  • Remove unnecessary heavy items from the vehicle.
  • Avoid excessive idling when it is not necessary.
  • Plan routes to reduce unnecessary driving.
  • Compare gas prices when choosing where to refuel.

Frequently Asked Questions

How do I calculate gas cost for a trip?
Divide the trip distance by your vehicle's fuel economy to estimate fuel consumption, then multiply the fuel used by the current gas price.
How do I calculate gas mileage?
Divide the distance traveled by the amount of fuel consumed. For example, 300 miles divided by 10 gallons equals 30 MPG.
Can I calculate gas cost per mile?
Yes. Divide your estimated total gas cost by the total distance traveled to calculate the gas cost per mile.
Does the calculator include tolls?
No. The calculator estimates fuel costs only. Tolls, parking, maintenance and other travel expenses are not included.
Is the gas cost estimate exact?
No. It is an estimate based on the information you enter. Real-world fuel consumption can vary because of traffic, weather, vehicle condition, speed and driving habits.
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