Fuel Trip Cost & Road Trip Budget

Calculate road trip fuel required, total gas cost, cost per passenger, metric/imperial conversions, and estimated CO2 emissions.

Category: Other Utilities

How to Use Fuel Trip Cost & Road Trip Budget

  1. Enter your trip distance in kilometers (and toggle Round Trip if returning the same route).
  2. Input your vehicle's average fuel efficiency in km/L and the fuel price per litre.
  3. Enter the number of passengers sharing the ride to split the total fuel bill.
  4. Click Process to calculate total fuel volume, total cost, cost per passenger, US MPG, and L/100km.

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Frequently Asked Questions

What is the formula for calculating total road trip fuel cost?

First, calculate Fuel Needed (Litres) = Total Distance (km) ÷ Fuel Efficiency (km/L). Then multiply Fuel Needed (Litres) × Fuel Price per Litre. To split among passengers, divide Total Fuel Cost by the passenger count.

How do you convert km/L to Litres per 100 km (L/100km) and US MPG?

To convert km/L to L/100km, divide 100 by the km/L value (L/100km = 100 ÷ km/L). To convert km/L to US Miles Per Gallon (MPG), multiply km/L by 2.35215.

Can I calculate fuel volume when the fuel price is 0?

Yes. Setting Fuel Price to 0 is supported and accurately calculates the required fuel volume in litres and US gallons with a $0.00 cost.

How does the Round Trip toggle work?

Enabling 'Round Trip (Double Distance)' automatically multiplies your entered one-way distance by 2 before computing fuel consumption, total cost, and per-passenger share.

How is the estimated CO2 emission figure calculated?

Standard combustion of 1 litre of petrol produces approximately 2.31 kg of CO2 (due to carbon bonding with atmospheric oxygen). The calculator multiplies total litres consumed by 2.31 kg/L as a reference estimate.