Fuel Price Comparison Calculator
Compare the cost of a fixed distance at two different fuel prices to see how much a price difference is really worth to you.
Your results
Calculation breakdown
- Monthly cost
- Monthly cost = (monthly km / 100) × L/100km × fuel price
Worked example
Driving 1,200km a month at 8L/100km, a 10 cent price gap between $1.85 and $1.75 per litre is worth about $9.60 a month.
Assumptions
- Does not account for extra distance driven to reach a cheaper station.
- Assumes the same fuel economy figure applies at both prices.
How this calculator works
Enter your fuel economy, typical monthly distance, and two fuel prices to compare, to see the real dollar difference in monthly fuel spend between them. Useful for deciding whether driving further for cheaper fuel, or switching fuel type, is actually worth it.
Frequently asked questions
Does this account for the extra distance to a cheaper station?
No, enter your regular driving distance; if a cheaper station requires a detour, weigh the fuel used for that detour against the savings separately.
Can I compare different fuel types, like E10 versus 91?
Yes, if fuel economy differs between fuel types, adjust the L/100km figure to reflect the fuel type being compared for an accurate result.
How often do fuel prices change in Australia?
Prices can change daily or even multiple times a day in some cities due to fuel price cycles; check a live fuel price app for current local prices.