Compare two pump prices
Compare two pump prices and see how much the lower price saves per fill, per month and per year.
Example: a 5 c/L gap
ExampleSaving per fill
$2.50
$10.00 a month · $120.00 a year
- Price you pay now, U91 national average
- 223.7 c/L
- Lower price
- 218.7 c/L
- Price gap
- 5.0 c/L
- Litres per fill
- 50 L
- Saving per fill
- $2.50
Example: a 5 c/L gap. Saving per fill. $2.50. $10.00 a month · $120.00 a year
Saving per fill · $10.00 a month · $120.00 a year$2.50
DetailsTurn a cents-per-litre gap into a real dollar saving
Compare the same grade
A U91 price cannot be compared directly with P98 or diesel because the products and vehicle requirements differ.
Enter the litres purchased
Saving per fill equals the price gap in cents multiplied by litres, divided by 100.
Use a realistic fill frequency
Monthly and annual savings depend on how often you buy that amount, not simply how often you visit a station.
Subtract the detour
If the lower price requires extra driving, test the return detour before treating the headline saving as money kept.
Fuel map
Check a station price before you go
Open the fuel map for reported prices, update times and directions near you or along your route.
Get the free FuelRadar app
Free on iPhone and Android: price alerts, saved stations, the forecast.
Price-saving calculator questions
How is the saving calculated?
Saving = (higher price − lower price) × litres ÷ 100. A c/L price gap becomes dollars once you multiply it by the fill amount.
Should I use this or the detour calculator?
Use this calculator when you are comparing two stations you would already pass. Use the detour calculator when the cheaper station adds distance.
Should discounts be included?
Start with the base pump price, then apply dockets or member rates in the discount calculator. A discount at a dearer station can still lose to a lower reported base price.