Tools
Fuel Calculators
Plan journeys, compare fuel costs, and understand efficiency with transparent, UK-focused tools.
Fuel cost and journeys
Plan journey costs, compare fuel types, and understand trip expenses.
Journey cost
Estimate a trip cost with national fuel averages and compare fuel types.
Split fuel cost
Share trip costs fairly between passengers.
Commute cost
Estimate annual commute spend and compare petrol, diesel and electric.
Mileage allowance
HMRC tax-free mileage pay, tax relief you can claim, and company car fuel rates.
Efficiency and emissions
Convert efficiency figures and understand consumption impacts.
Fuel efficiency
Calculate MPG and L/100km with clear efficiency guidance.
MPG converter
Convert MPG to L/100km and back.
CO₂ emissions
Estimate emissions for a journey.
Driving speed
What driving at 60 instead of 70 mph saves, and the extra time it takes.
Fuel prices and savings
Compare price breakdowns and track savings opportunities.
Fill-up cost
What a full tank costs, or how many litres and miles you get for £20.
Price breakdown
See how taxes and wholesale costs shape pump prices.
Fuel savings
See if a cheaper station is worth the extra drive.
Electric vs petrol
Compare a year of petrol or diesel with charging an electric car.
Plan fuel costs with context
Each calculator uses UK units and transparent assumptions, but your real-world costs can change with local prices. Pair these tools with postcode search, county pages, and the price map to see how freshness and regional trends affect what you will actually pay at the pump.
For longer journeys, use the route planner to spot cheaper stops and compare brands before you fill up. These links keep you close to live data while you plan.