Fuel Cost Calculator
Free online fuel cost calculator. Estimate trip fuel cost from distance, vehicle fuel efficiency, and fuel price. Supports metric (km, L/100km) and imperial (miles, MPG) units and splits costs among passengers. 100% client-side.
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What is Fuel Cost Calculator?
The Fuel Cost Calculator is a free, browser-based tool that estimates how much you will spend on fuel for any trip. Enter the trip distance, your vehicle’s fuel efficiency, and the current fuel price, and it instantly computes the total fuel cost, the amount of fuel needed, and the cost per mile or kilometer. It supports both metric units (kilometers, liters per 100 km) and imperial units (miles, miles per gallon), and can split the total evenly among passengers for carpools and shared journeys. Everything runs entirely in your browser with no data sent anywhere.
Key Benefits
- Works with both metric (km, L/100km) and imperial (miles, MPG) units with one click
- Instantly shows total fuel cost, fuel needed, and cost per mile or kilometer
- Splits the trip cost evenly among any number of passengers
- Accepts decimal values for precise fuel efficiency and real-world prices
- 100% client-side and offline-capable — your inputs never leave your device
Common Use Cases
- •Budget fuel expenses for a road trip or daily commute
- •Compare the running cost of different vehicles before buying or renting
- •Split gas money fairly among carpool passengers
- •Estimate delivery or business mileage costs for reimbursement
- •Plan refueling stops by calculating fuel needed for a long journey
How to Use the Fuel Cost Calculator
- Pick your unit system: Choose Metric (kilometers and liters per 100 km) or Imperial (miles and miles per gallon) using the toggle at the top. The input labels and placeholders update automatically.
- Enter the trip distance: Type the distance you plan to travel. For a round trip, enter the total distance both ways so the estimate covers the full journey.
- Add fuel efficiency and price: Enter your vehicle’s fuel efficiency (L/100km or MPG) and the current fuel price per liter or gallon. Optionally set the number of passengers to split the cost.
- Read the results: Review the total fuel cost, the amount of fuel needed, and the cost per mile or kilometer. If you set passengers, the per-person split appears below. Click Copy to save a text summary.
Key Features
- Estimates total fuel cost from trip distance, vehicle fuel efficiency, and the current fuel price
- Supports both metric (km, L/100km) and imperial (miles, MPG) units with a one-click toggle
- Shows the exact amount of fuel needed plus the cost per mile or kilometer for easy comparison
- Splits the total cost evenly among any number of passengers for carpools and shared trips
- Accepts decimal values for precise fuel efficiency and real-world fuel prices
- 100% client-side and offline-capable — your trip details never leave your device