Average Fuel Price Calculator
How do I use this page?
- Fill in the fields in the form above — the result recomputes at once, with no page reload.
- Under the result you will find the interpretation scale, if the calculator has one: it says which range your value fell into.
- The formula we use is shown lower on this page — you can check the arithmetic yourself.
- To compute the same for another game or variant, change it in the select field — prices and pools update automatically.
Further reading
Theory — how to calculate the average fuel price?
The price shown on a fuel station sign rarely matches what you actually pay over a year, because you fill up in different places. In Poland the difference between a motorway station and a local one can reach 40–60 groszy per litre. The calculator computes a simple arithmetic average of three entered prices per litre — for 8.79, 8.99 and 9.19 PLN it adds them and divides by three. The result reflects the real price level from your own fill-ups, without comparing it to outdated market figures.
Frequently asked questions
How do I calculate the average fuel price from three fill-ups?
Add the three prices per liter and divide the sum by three. For 8.79 PLN, 8.99 PLN and 9.19 PLN the sum is 26.97 PLN, so the average is 8.99 PLN per liter. Note that you're averaging unit prices, not the amounts paid at the register.
What's the difference between the arithmetic average and the weighted average fuel price?
The arithmetic average treats each fill-up equally, the weighted average accounts for the number of liters. With 10 liters at 6.80 PLN and two fill-ups of 50 liters at 6.10 PLN, the arithmetic average is 6.33 PLN, while the weighted average is 6.16 PLN. The 17-cent difference comes from the expensive fill-up being five times smaller.
How much tax is included in the price of a liter of petrol in Poland?
About half. As of January 1, 2026, excise duty on motor petrol is 1529 PLN per 1000 liters, i.e. 1.53 PLN per liter, plus a fuel fee, an emission fee, and 23 percent VAT calculated on the total. Excise rates change by regulation, so check the current values before calculating.
How much can I save by filling up 20 cents cheaper?
With an annual mileage of 15,000 km and consumption of 7 l/100 km you use 1050 liters, so a 20-cent difference gives 210 PLN a year. With a mileage of 30,000 km and consumption of 9 l/100 km that's already 2700 liters, i.e. 540 PLN a year.