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Convert vehicle gas mileage between US MPG, UK Imperial MPG, Liters per 100km (L/100km), and km/L. Instant fuel consumption calculator for cars and trucks.
Live visual readout for your conversion
| Miles per Gallon (US) (MPG (US)) | Liters per 100km (L/100km) | Liters per 100km (Reverse) | Miles per Gallon (US) Equivalent | Action |
|---|---|---|---|---|
| 0.1 MPG (US) | 2,352.14583 L/100km | 0.1 L/100km | 2,352.14583 MPG (US) | |
| 0.5 MPG (US) | 470.42917 L/100km | 0.5 L/100km | 470.42917 MPG (US) | |
| 1 MPG (US) | 235.21458 L/100km | 1 L/100km | 235.21458 MPG (US) | |
| 2 MPG (US) | 117.60729 L/100km | 2 L/100km | 117.60729 MPG (US) | |
| 5 MPG (US) | 47.04292 L/100km | 5 L/100km | 47.04292 MPG (US) | |
| 10 MPG (US) | 23.52146 L/100km | 10 L/100km | 23.52146 MPG (US) | |
| 20 MPG (US) | 11.76073 L/100km | 20 L/100km | 11.76073 MPG (US) | |
| 50 MPG (US) | 4.70429 L/100km | 50 L/100km | 4.70429 MPG (US) | |
| 100 MPG (US) | 2.35215 L/100km | 100 L/100km | 2.35215 MPG (US) | |
| 500 MPG (US) | 0.47043 L/100km | 500 L/100km | 0.47043 MPG (US) | |
| 1000 MPG (US) | 0.23521 L/100km | 1000 L/100km | 0.23521 MPG (US) |
Symbol: MPG (US). Commonly used in: us.
Symbol: MPG (UK). Commonly used in: imperial.
Symbol: km/L. Commonly used in: metric.
Symbol: L/100km. Commonly used in: metric.
Every conversion starts with the standard baseline rate between these two units:
Multiply your entered number by the conversion rate to calculate the exact target value:
The result is neatly rounded to your preferred decimal setting so it is clear and ready to use:
| Unit Name | Symbol | System | Conversion Rate | Common Uses |
|---|---|---|---|---|
| Miles per Gallon (US) | MPG (US) | us | 1 MPG (US) = 1.000000 MPG (US) | Everyday, home, and school measurements in Fuel Economy. |
| Miles per Gallon (UK) | MPG (UK) | imperial | 1 MPG (UK) = 0.832674 MPG (US) | Everyday, home, and school measurements in Fuel Economy. |
| Kilometers per Liter | km/L | metric | 1 km/L = 2.352146 MPG (US) | Everyday, home, and school measurements in Fuel Economy. |
| Liters per 100km | L/100km | metric | 1 L/100km = 235.214583 MPG (US) | Everyday, home, and school measurements in Fuel Economy. |
Different countries adopted either distance-per-volume (MPG, km/L) or volume-per-distance (L/100km).
1 Imperial Gallon (4.546 L) is larger than 1 US Gallon (3.785 L), so UK MPG numbers look higher than US MPG for the same car.
Divide 235.215 by the MPG number. For example: 235.215 / 30 MPG = 7.84 L/100km.
An Imperial (UK) gallon is 4.546 liters, while a US gallon is 3.785 liters. A car getting 30 US MPG will get 36.03 UK MPG.
Every calculation uses trusted, standard definitions so your results are 100% accurate for school, home, work, and recipes.
