Jack Tools

Fuel Cost Calculator

Estimate fuel used, trip cost, and running costs based on distance, fuel price, and efficiency.

Enter trip details

miles
£ / litre
mpg

Choose miles + MPG or kilometres + litres per 100km to match your vehicle and trip details.

Estimated trip cost
£0.00
Fuel used: 0.00 litres
Fuel used
0.00 L
Cost per distance unit
£0.00
Return trip cost
£0.00
Monthly estimate
£0.00

Fuel cost breakdown

Distance entered 0
Fuel price used £0.00
Efficiency used 0
Trips per month 0

How This Fuel Cost Calculator Works

This fuel cost calculator estimates how much fuel a journey will use and how much that trip is likely to cost based on distance, fuel price, and your vehicle’s fuel efficiency.

You can use either miles with MPG or kilometres with litres per 100km, depending on which format is more familiar. The calculator converts the figures into an estimated fuel usage in litres and then multiplies that by the fuel price.

It also shows extra context like return trip cost, cost per mile or kilometre, and a monthly estimate based on how many times you make that trip.

This makes it useful for commuting, road trips, delivery work, budgeting for regular journeys, and comparing the running cost of different vehicles or routes.

Trip distance Enter the one-way distance for the journey you want to estimate.
Fuel price Use the current cost per litre of fuel so the estimate reflects recent prices.
Fuel efficiency Choose MPG if using miles, or litres per 100km if using kilometres.
Monthly trips Add how many times you make the journey each month to estimate regular fuel spending.
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Example Fuel Cost Calculations

Daily commute
Distance30 miles
Efficiency50 mpg
Fuel price£1.45/L
Low-cost regular trip
Weekend road trip
Distance200 miles
Efficiency42 mpg
Fuel price£1.52/L
Estimate total travel fuel
Metric example
Distance350 km
Efficiency6.8 L/100km
Fuel price£1.48/L
Useful for longer trips
Monthly driving
Trip distance25 miles
Trips / month20
ModeMPG
Estimate monthly fuel budget

Fuel Cost Calculator FAQs

This calculator estimates how much fuel a trip will use and how much that fuel is likely to cost based on the distance, price per litre, and fuel efficiency entered.
Yes. You can switch to miles plus MPG mode if that matches how you normally measure distance and economy.
Yes. The calculator also supports kilometres and litres per 100km, which is common in many vehicles and countries.
The main trip cost is one way, but the calculator also shows an estimated return trip cost separately for convenience.
It is a useful estimate, but actual fuel use can vary based on traffic, weather, driving style, load, terrain, and the real-world efficiency of the vehicle.
Yes. Add the number of times you make the trip each month and the calculator will estimate the related monthly fuel cost.

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