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Fuel Cost Calculator

Calculate how much any trip costs. Gasoline, diesel, LPG, electric. CO2 emissions, vehicle comparison, and cost per person.

4 fuel types
Gas, diesel, LPG, electric
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CO2 & impact
Trip emissions estimate
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Free
No limits, no account
✅ 100% free
🔒 Client-side calculation
🚀 Instant results
🌐 Works worldwide
1

Distance & vehicle

Enter distance, consumption, and fuel type

2

Fuel price

Enter the price per liter or gallon

3

See your costs

Total cost, per mile, CO2, and split bill

Fuel Cost Calculator

Trip distance
Average vehicle consumption
Price per gallon in your area
Split costs among passengers

📊 Fuel Comparison

For the same distance — enter data above to see comparison

Fuel Economy Used Cost CO2
Enter distance and price to see comparison

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Frequently Asked Questions

How do you calculate fuel cost for a trip?

Use the formula: (distance / MPG) × price per gallon. Or in metric: (distance / 100) × consumption (L/100km) × price per liter. Example: a 200-mile trip at 30 MPG with gas at $3.50/gal costs (200/30) × 3.50 = $23.33.

Gas vs diesel vs electric: which is cheapest per mile?

Electric vehicles are cheapest per mile (~$0.04/mi), followed by diesel (~$0.11/mi), then gasoline (~$0.12/mi). However, EVs have higher purchase prices. For high-mileage drivers (15,000+ miles/year), EVs save significantly on fuel costs over time.

How do I calculate CO2 emissions from driving?

Each gallon of gasoline produces about 8.89 kg (19.6 lbs) of CO2. Diesel produces 10.18 kg per gallon. A 200-mile trip at 30 MPG emits: 6.67 gal × 8.89 = 59.3 kg of CO2. Electric vehicles produce zero direct emissions.

How much does gas cost per mile?

With average US gas at $3.50/gallon and 30 MPG, the cost is about $0.12 per mile. At 25 MPG it's $0.14/mi, at 35 MPG it's $0.10/mi. Use this calculator with your actual consumption and price for a precise figure.

How to save fuel on a road trip?

Top tips: maintain steady speed (cruise control), keep tires properly inflated, reduce weight and drag, avoid idling, plan route to avoid traffic. Driving at 55-65 mph instead of 75+ can improve fuel economy by 15-25%.

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