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Calculate Trip Fuel Cost - Free Gas Cost Calculator for Road Trips

Planning a road trip and wondering how much you'll spend on gas? Our free trip fuel cost calculator helps you estimate your travel expenses with precision. Simply enter your trip distance, your vehicle's miles per gallon (MPG), and current fuel prices to get instant cost calculations. Whether you're planning a weekend getaway, a cross-country adventure, or your daily commute, this calculator provides accurate fuel cost estimates to help you budget effectively. Perfect for comparing routes, planning family vacations, or tracking business travel expenses. Get real-time results as you adjust your inputs, explore beautifully organized itineraries with ItineraryForge, and check rolling weather patterns with WeatherPulse before you drive.

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Disclaimer: Cost estimates are provided as-is and may not reflect actual expenses. Fuel prices vary by location and time. Actual MPG may differ based on driving conditions.

How to Use This Calculator

  1. Enter your trip distance in miles or kilometers
  2. Check the "Round trip" box if you're calculating a return journey
  3. Select your vehicle type for quick MPG estimates, or enter your vehicle's actual MPG
  4. Choose your fuel type (Regular, Premium, or Diesel)
  5. Enter the current fuel price per gallon in your area
  6. Results calculate automatically as you type
  7. Use the Share button to save your calculation as a link, or Save to History for later reference

Pro Tip: For the most accurate results, check your vehicle's actual MPG from recent fill-ups. City driving typically yields lower MPG than highway driving. Pair this calculator with TravelGeo for precise route distances and use AssetDropper to understand how each journey affects long-term vehicle value.