Fuel Consumption Converter
Convert between 8 fuel consumption units instantly. Enter a value, pick your units and get the result with the formula, a full conversion table and worked examples.
30 mpg (US) in all fuel consumption units
Updates live as you type. Click a row to set it as the target unit.
| Unit | Symbol | Value |
|---|---|---|
| Kilometre per litre | km/L | 12.7543 |
| Litre per 100 kilometres | L/100 km | 7.84049 |
| Litre per kilometre | L/km | 0.0784049 |
| Mile per gallon (US) | mpg (US) | 30 |
| Mile per gallon (UK) | mpg (UK) | 36.0285 |
| Mile per litre | mi/L | 7.92516 |
| Kilometre per gallon (US) | km/gal | 48.2803 |
| Gallon (US) per 100 miles | gal/100 mi | 3.33333 |
How to Convert Fuel Consumption Units
Fuel consumption compares distance travelled with fuel used. Some units (km/L, mpg) grow as efficiency improves while others (L/100 km) shrink, so the conversion is reciprocal rather than a simple multiplier.
This converter changes each unit into kilometres per litre first. Units that express distance per fuel are multiplied by their factor, while units that express fuel per distance (such as L/100 km) are divided into their factor.
mpg (US) = 235.215 ÷ L/100 km
km/L = 100 ÷ L/100 km
Mile per gallon (US) to Litre per 100 kilometres conversion table
| Mile per gallon (US) (mpg (US)) | Litre per 100 kilometres (L/100 km) |
|---|---|
| 5 mpg (US) | 47.0429 L/100 km |
| 10 mpg (US) | 23.5215 L/100 km |
| 15 mpg (US) | 15.681 L/100 km |
| 20 mpg (US) | 11.7607 L/100 km |
| 25 mpg (US) | 9.40858 L/100 km |
| 30 mpg (US) | 7.84049 L/100 km |
| 35 mpg (US) | 6.72042 L/100 km |
| 40 mpg (US) | 5.88036 L/100 km |
| 45 mpg (US) | 5.22699 L/100 km |
| 50 mpg (US) | 4.70429 L/100 km |
| 60 mpg (US) | 3.92024 L/100 km |
| 80 mpg (US) | 2.94018 L/100 km |
Fuel Consumption Units and Conversion Factors
Value of one unit expressed in km/L.
| Unit | Symbol | In km/L |
|---|---|---|
| Kilometre per litre | km/L | 1 |
| Litre per 100 kilometres | L/100 km | 100 ÷ value |
| Litre per kilometre | L/km | 1 ÷ value |
| Mile per gallon (US) | mpg (US) | 0.4251437074 |
| Mile per gallon (UK) | mpg (UK) | 0.3540061899 |
| Mile per litre | mi/L | 1.609344 |
| Kilometre per gallon (US) | km/gal | 0.2641720524 |
| Gallon (US) per 100 miles | gal/100 mi | 42.51437074 ÷ value |
Frequently Asked Questions
How do I convert mpg (US) to L/100 km?
To convert mile per gallon (us) (mpg (US)) to litre per 100 kilometres (L/100 km), divide 235.215 by the value in mpg (US). For example, 1 mpg (US) = 235.215 L/100 km.
How do I convert L/100 km to mpg (US)?
To convert litre per 100 kilometres (L/100 km) to mile per gallon (us) (mpg (US)), divide 235.215 by the value in L/100 km. For example, 1 L/100 km = 235.215 mpg (US).
How do I convert km/L to L/100 km?
To convert kilometre per litre (km/L) to litre per 100 kilometres (L/100 km), divide 100 by the value in km/L. For example, 1 km/L = 100 L/100 km.
Why is the conversion between L/100 km and mpg reciprocal?
Miles per gallon measures distance per unit of fuel, while litres per 100 km measures fuel per unit of distance. One is the inverse of the other, so a higher mpg means a lower L/100 km and the conversion uses division instead of multiplication.
Can I see a value in every fuel consumption unit at once?
Yes. Enter a value and choose the source unit; the "all units" table below the converter instantly lists the equivalent in all 8 supported units. Click any row to make it the target unit.
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