Road Trip Cost Calculator
Estimate fuel costs for any road trip based on distance, MPG, and gas price.
Last updated: June 13, 2026
Calculator
Results
How to Use This Calculator
- 1Enter trip distance in miles.
- 2Enter your vehicle fuel economy (MPG).
- 3Enter the current gas price per gallon.
- 4View total fuel cost and cost per mile.
Formula Explanation
Total fuel cost is calculated by dividing total distance by MPG to get gallons needed, then multiplying by gas price.
Variables:
Worked Examples
500-mile trip, 28 MPG, $3.50/gal
- 1. Gallons = 500 ÷ 28 = 17.9
- 2. Cost = 17.9 × $3.50 = $62.50
Why Use This Calculator
- Budget accurately for road trips.
- Compare fuel costs between vehicles.
- Plan fuel stops based on tank size.
- Calculate cost per mile for expense reports.
Tips & Best Practices
- Check GasBuddy for cheapest gas prices along your route.
- Highways typically give better MPG than city driving.
- AC reduces fuel economy by 1-3 MPG on average.
- Keep tires properly inflated to maximize MPG.
Common Mistakes to Avoid
❌ Using city MPG for highway driving estimates.
✅ Use the EPA highway rating for road trip calculations, not the combined or city MPG. Highway MPG is typically 5-10 higher.
❌ Not accounting for elevation changes.
✅ Mountain driving can reduce MPG by 10-20%. Add a buffer for routes through hilly terrain.
Frequently Asked Questions
How do I find my car's MPG?
Does speed affect fuel cost?
Embed This Calculator
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<iframe src="https://redicalc.com/embed/travel/road-trip-cost-calculator" width="100%" height="600" style="border:none;border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,0.1);" title="Road Trip Cost Calculator — RediCalc.com" loading="lazy" allowtransparency="true"></iframe>Disclaimer: This calculator is provided for informational and educational purposes only. Results are estimates and should not be used as a substitute for professional advice. RediCalc.com makes no guarantees regarding the accuracy, completeness, or suitability of any calculations. Always consult a qualified professional before making financial, health, construction, or other important decisions.
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