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FREETOOLS LABS

Calculator

Fuel & Trip Cost Calculator

Calculate fuel economy, fuel required, range, trip and commute costs, or compare two vehicles.

Calculation

Choose a mode and enter only the values it needs.

Result

Result

29.25 €

Total distance250.00 km
Fuel required16.250 l
Total cost29.25 €
Cost per kilometre0.1170 €/km
Cost per mile0.1883 €/mi
l/100 km6.50
km/l15.38
mpg (US)36.19
mpg (UK)43.46

Calculating consumption

Litres per 100 km equals fuel litres divided by kilometres, times 100. A fill-up calculation is most meaningful when filling under comparable conditions and recording the distance.

l/100 km, km/l and MPG

l/100 km measures fuel per distance; lower means mathematically less fuel. km/l and MPG measure distance per fuel. US MPG uses a US gallon and UK MPG an Imperial gallon.

Trip, fuel and range

Trip cost is fuel required times your price. Fuel required is distance times l/100 km divided by 100. Range is fuel divided by l/100 km times 100 and remains an estimate.

Commutes and variation

Commutes assume a return trip each day; monthly cost is annual cost divided by 12. Traffic, weather, load, driving style and vehicle condition affect real consumption.

Frequently asked questions

How do I calculate fuel use per 100 km?

Divide litres used by recorded kilometres and multiply by 100.

How much fuel is needed for 500 km?

Multiply 500 by l/100 km and divide by 100.

What does 100 km cost?

Multiply l/100 km by price per litre.

How is a round trip calculated?

The one-way distance is doubled once before the normal calculation.

How are monthly commute costs calculated?

From return distance, days and weeks; annual cost is divided by 12.

How do I convert l/100 km?

km/l is 100 divided by l/100 km; MPG uses its explicit US or UK factor.

What differs between US and UK MPG?

The Imperial gallon is larger, so UK MPG is higher for identical consumption.

How far can 50 litres go?

At 5 l/100 km, the calculated range is 1000 km.

Why can dashboard range differ?

This calculation assumes constant consumption while real conditions vary.

Can I compare two vehicles?

Yes, using one distance and a separate consumption and price for each.

Are live fuel prices loaded?

No. You provide the price.

Are insurance and maintenance included?

No. Only fuel-based travel cost is calculated.