How do I convert MPG to L/100km?

To convert UK MPG to L/100km: divide 282.5 by MPG. To convert US MPG: divide 235.2 by MPG. Example: 30 US MPG = 235.2 / 30 = 7.84 L/100km. The calculator handles both conversions automatically.

Does fuel efficiency change on highways vs city driving?

Yes significantly. Highway driving at steady speeds is typically 20–30% more efficient than stop-and-go city driving. Vehicle fuel ratings usually show both city and highway figures — use the combined figure for mixed driving.

How do I calculate the cost per mile or kilometer?

Cost per km = (L/100km × fuel price) / 100. For a car using 8L/100km with fuel at $1.80/L: (8 × $1.80) / 100 = $0.144 per km. Alternatively, cost per km = fuel cost per liter × consumption rate.

Home ToolsFuel Cost Calculator

Fuel Cost Calculator

Name: Fuel Cost Calculator
Rating: 4.8 (120 reviews)
Author: DailyDevTools

Calculate trip fuel cost

Distance (miles/km)

Fuel Efficiency (MPG or km/L)

Fuel Price ($)

Total Cost

$11.67

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What is Fuel Cost Calculator?

Calculating fuel costs for road trips, fleet management, or comparing the running costs of different vehicles requires knowing distance, fuel efficiency, and price per liter or gallon. DailyDevTools' Fuel Cost Calculator handles both metric (liters/100km) and imperial (MPG) systems and computes total fuel needed, total cost, and cost per kilometer or mile for any journey.

How to use Fuel Cost Calculator

1Enter the trip distance in km or miles
2Enter your vehicle's fuel efficiency in L/100km or MPG
3Enter the current fuel price per liter or gallon
4View the total fuel needed and total trip cost instantly

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