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.
Electric car? See the EV Charge Cost Calculator. Planning a journey? Try the Fuel Trip Calculator (start → end, MPG, litres, cost — stations within 3 miles of start). Compare your usual station: Station Savings Calculator (cheaper forecourt within 2 miles, yearly estimate).
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.