Gas Cost Calculator – Calculate Fuel Costs for Any Trip
Planning a road trip or trying to figure out how much your daily commute is costing you? Our free gas cost calculator gives you an instant breakdown of your total fuel costs, drive time, and how much you spend on gas every month and every year.
How to Use This Gas Cost Calculator
Select your country from USA, UK, Canada, Australia or Europe. Enter the distance of your trip in miles or kilometres. Enter your vehicle’s fuel efficiency in MPG or L/100km. Enter the current gas or petrol price in your area. Select the number of passengers to split the cost. Check Round Trip if you are calculating a return journey. Then click Calculate Gas Cost.
What This Calculator Shows You
This gas cost calculator gives you a complete picture of your fuel expenses. It shows the total gas cost for your trip, total fuel used in gallons or litres, cost per mile or kilometre, cost per person based on number of passengers, estimated drive time based on your speed, and your weekly, monthly and yearly commute costs if this is a regular journey.
Gas Prices by Country
Gas and petrol prices vary significantly around the world. Here are approximate average fuel prices across Tier 1 countries as of early 2026. Always check your local gas station for the most current price before your trip.
United States: approximately $3.20 to $4.00 per gallon depending on state. United Kingdom: approximately £1.45 to £1.65 per litre. Canada: approximately C$1.50 to C$1.80 per litre. Australia: approximately A$1.80 to A$2.10 per litre. Europe: approximately €1.60 to €1.95 per litre depending on country.
Average Fuel Efficiency by Vehicle Type
Not sure what MPG or L/100km to enter? Here are typical fuel efficiency figures for common vehicle types.
Small sedan like Toyota Corolla or Honda Civic gets 30 to 38 MPG or 6 to 8 L/100km. Mid-size sedan like Toyota Camry or Honda Accord gets 28 to 34 MPG or 7 to 8 L/100km. SUV like Ford Explorer or Toyota RAV4 gets 22 to 28 MPG or 8 to 11 L/100km. Pickup truck like Ford F-150 or Chevy Silverado gets 18 to 24 MPG or 10 to 13 L/100km. Hybrid like Toyota Prius gets 50 to 58 MPG or 4 to 5 L/100km. Luxury car like BMW 5 Series or Mercedes E-Class gets 22 to 30 MPG or 8 to 10 L/100km.
How Much Does a Road Trip Cost in Gas?
The cost of a road trip depends on three things — the distance, your vehicle’s fuel efficiency, and the current gas price. Here are some popular US road trip estimates based on a vehicle getting 30 MPG and gas at $3.50 per gallon.
New York to Los Angeles is approximately 2,800 miles and costs around $327 one way. Chicago to Miami is approximately 1,380 miles and costs around $161 one way. Los Angeles to San Francisco is approximately 380 miles and costs around $44 one way. New York to Miami is approximately 1,280 miles and costs around $149 one way. Dallas to Denver is approximately 920 miles and costs around $107 one way.
How Much Does Commuting Cost Per Year?
The average American commutes about 41 miles per day round trip. At 30 MPG and $3.50 per gallon that works out to roughly $4.76 per day, $23.80 per week, $103 per month, and approximately $1,237 per year just on gas. Use the calculator above to find your exact commute cost based on your actual distance and vehicle.
Tips to Reduce Your Gas Bill
Keep your tires properly inflated. Under-inflated tires increase rolling resistance and can reduce your MPG by up to 3 percent. Use cruise control on highways to maintain a steady speed and save up to 14 percent in fuel. Avoid idling — a car sitting still burns fuel at 0 MPG so turn off your engine if stopped for more than 60 seconds. Accelerate smoothly and gradually instead of aggressively. Remove excess weight from your trunk as every extra 100 pounds reduces fuel economy by roughly 1 percent. Share the ride with a passenger and immediately cut your fuel cost in half.
Frequently Asked Questions:
How do I calculate gas cost for a road trip? Divide your total trip distance by your vehicle’s MPG to get gallons needed, then multiply by the gas price. For example a 500 mile trip in a car getting 30 MPG needs 16.67 gallons. At $3.50 per gallon that is $58.33. This calculator does all of that automatically.
How do I calculate gas cost per mile? Divide the gas price by your MPG. At $3.50 per gallon and 30 MPG your cost per mile is about 12 cents. This calculator shows your cost per mile automatically in the results.
How much gas money should I charge per mile? The IRS standard mileage rate for 2025 is 70 cents per mile for business driving. For casual carpooling most people charge between 10 and 20 cents per mile to cover just the fuel cost.
How do I convert L/100km to MPG? Divide 235.21 by your L/100km figure to get MPG. For example 8 L/100km equals approximately 29.4 MPG. This calculator handles both automatically based on your country selection.
Is this gas cost calculator free? Yes, completely free. No sign up, no login, no limits. Works for USA, UK, Canada, Australia and Europe.
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Last updated: March 2026 · Free tool by AllTheTools.com