Fuel Fill Calculator
Enter your tank size and where you fill up — we'll show the estimated cost of a full tank at the cheapest nearby stations for E10 petrol or B7 diesel, using live UK prices.
New to fuel types? See our E10 petrol and B7 diesel guides, or browse fuel prices by location.
Common questions
- How does the Fuel Fill Calculator work?
- You enter your tank size in litres, a UK postcode or place name, and choose E10 petrol or B7 diesel. We geocode your location, fetch live station prices nearby, and estimate your full-tank cost using the same pence-per-litre data as our map.
- How accurate are the prices?
- Prices come from the same hourly retailer feeds as FuelNearby. Always confirm the price on the forecourt before filling up — the calculator is for comparison only.
- What area does the search cover?
- We look at stations within roughly 20 miles of your searched point and rank them by price for your chosen fuel type.
Estimates use live list prices from retailer data feeds; actual pump prices may vary. FuelNearby is not affiliated with any fuel brand. Always verify before you pay.