Calculate fuel consumption in litres per 100 km, kilometres per litre and an approximate miles-per-gallon value.
Divides fuel used by distance and scales the result to 100 kilometres. The displayed mpg value is an approximate US-style conversion.
A lower L/100 km value generally means less fuel is used per distance travelled.
Convert your distance to kilometres first or use the displayed mpg estimate as a reference.
Fuel economy can be expressed as litres per 100 kilometres, kilometres per litre or miles per gallon. These formats describe the same general relationship but are not numerically interchangeable without conversion.
L/100 km measures fuel consumed for a fixed distance, so a lower number generally means better efficiency. km/L and mpg work in the opposite direction: a higher number generally indicates better efficiency.
Use the displayed result as a useful starting point, then check the assumptions that matter for your situation. Keep units, dates, rates and rounding consistent, and save the original information when you are working with a document or financial estimate.
Explore the UniConvertHub guides for worked explanations and practical checks, or return to the tool library to compare related calculators and converters.
Fuel economy can describe how far a vehicle travels per amount of fuel or how much fuel it consumes over a distance. Litres per 100 kilometres measures consumption, while kilometres per litre measures distance per fuel and therefore moves in the opposite direction.
Miles per gallon is not a single universal number because the US gallon and imperial gallon have different volumes. When comparing vehicle specifications from different countries, confirm which gallon definition is being used before comparing the figures.
Official test figures may differ from real-world consumption because driving style, traffic, weather, load and vehicle condition affect fuel use. A converter can put published figures on the same unit basis, but it cannot predict actual fuel consumption for a particular journey.
Browse the UniConvertHub guides for explanations, examples and practical checks, or return to the tool library to find another calculator or converter.
What is the purpose of the number? A result can be mathematically correct while still being unsuitable for the decision you are making. Before copying the result into a report, form or message, identify whether you need an estimate, a rounded everyday value or a value that must follow a particular technical, financial or regulatory rule.
Are the inputs consistent? Keep units, dates, rates and reference values aligned. If information comes from different sources, check that the sources use the same definitions. Pay attention to labels that look similar but are not interchangeable, such as gross and net amounts, mass and force, elapsed days and inclusive dates, or decimal and binary storage units.
Can someone reproduce the calculation? When a result matters, keep the original inputs and the assumptions used. This makes it easier to find an error, explain a difference or update the result later. UniConvertHub is intended to make the calculation visible and repeatable rather than hide the steps behind a single unexplained number.