⛽Fuel Consumption Calculator

Fuel consumption converter — l/100 km, mpg and km/l

Car manufacturers state fuel consumption in different units: Europe favours l/100 km, the US and UK use miles per gallon (mpg), and some Asian markets prefer km/l. Our free converter turns any of these values into all the others in a fraction of a second. Just enter the number and select the source unit.

Trip fuel usage and cost calculator

Planning a journey and want to know how much fuel and money you will need? In the Trip calculator tab, enter the distance, your car's average consumption and the current pump price — and we will instantly calculate the litres used, total trip cost and cost per 100 km. Everything runs locally in your browser; no data is sent to any server.

Frequently asked questions

How do I convert l/100 km to mpg?

To convert fuel consumption from l/100 km to US mpg, divide 235.215 by the value in l/100 km (e.g. 6 l/100 km = 39.2 mpg US). For UK mpg use the divisor 282.481. Our converter does this automatically.

How do I calculate fuel cost for a trip?

Fuel cost = (distance in km x consumption in l/100 km / 100) x price per litre. Example: 300 km at 7 l/100 km and a price of 1.50 per litre means 21 litres, costing 31.50. The Trip calculator tab does this for you.

What is the difference between US mpg and UK mpg?

A UK gallon is 4.546 l while a US gallon is 3.785 l. That is why the same mpg UK figure corresponds to lower consumption than the same mpg US figure. 1 mpg UK is approximately 1.201 mpg US.

How many km/l is a car that consumes 8 l/100 km?

km/l = 100 / consumption in l/100 km. For 8 l/100 km the result is 100 / 8 = 12.5 km/l. In other words, the car travels 12.5 km on one litre of fuel.