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How Much Does It Cost?

Trip fuel cost calculator

Before a road trip, or to split costs when car-sharing, you only need three figures: distance, fuel economy and fuel price. Add tolls and parking for the full cost.

Transport Updated:

Inputs

km
L/100 km

In L/100 km or mpg depending on your units. Use the real figure from your trip computer.

$/L

Example value: enter the current price at your filling station.

$
$

Starting values are editable examples, not official prices. Results update automatically as you change the inputs.

Result

Trip fuel cost calculator — How Much Does It Cost?

Total trip cost

$31.20

Per person
$31.20
Fuel needed
19.5 L
Fuel cost
$31.20
Cost per distance
$0.104/km
Total distance
300 km
Trip cost if the fuel price changes
Calculation breakdown
  1. Total distance = 300 km
  2. Fuel = distance × consumption ÷ 100 = 19.5 L
  3. Fuel cost = 19.5 L × $1.60/L = $31.20
  4. Total = $31.20 + tolls and other $0.00 = $31.20
  5. Per person = $31.20 ÷ 1

Indicative result based on the data you entered. It does not replace a professional quote or your actual bill.

How it is calculated

In metric: litres = distance × consumption (L/100 km) ÷ 100. In US units: gallons = miles ÷ mpg. A return trip doubles the distance.

Cost = fuel × price + tolls + parking. Per person = cost ÷ people.

Worked example

Using the calculator’s example values:

  • Trip distance: 300 km
  • Return trip: No
  • Average fuel consumption: 6.5 L/100 km
  • Fuel price: $1.60/L
  • People sharing the cost: 1
  • Tolls: $0.00
  • Parking and other: $0.00

Result: Total trip cost — $31.20 (per person: $31.20; fuel needed: 19.5 L; fuel cost: $31.20).

Money-saving tips

  • A steady, moderate speed cuts fuel use.
  • Check tyre pressures before setting off.
  • Roof boxes increase aerodynamic drag.

Frequently asked questions

What consumption should I use if I don’t know it?

The real figure from your trip computer is more reliable than the official rating. Highway economy usually differs from city driving.

How do I convert mpg to L/100 km?

L/100 km = 235.21 ÷ mpg (US gallon). Switch units in the header and the calculator does it for you.

Does it include wear and tear?

No. For a fuller cost per mile use the vehicle maintenance calculator.

GuideHow to calculate the fuel cost of a trip

How we calculate and the limits of the results: Methodology.

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