Fuel Consumption Converter
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Fuel economy conversions
The charts below show conversions for the most common units related to fuel economy. Whilst the majority of the world measures fuel economy in Liters Per 100km, the UK still uses the imperial Miles Per Gallon (MPG). MPG is also sometimes referenced in the United States. However, it's worth remembering that the US gallon is smaller than the UK gallon, meaning MPG measurements for the US unit and the imperial unit are different.
| L/100km | MPG (US) | MPG (UK) | Km/L |
|---|---|---|---|
| 2.0 | 117.6 | 141.2 | 50.0 |
| 2.2 | 106.9 | 128.4 | 45.5 |
| 2.4 | 98.0 | 117.7 | 41.7 |
| 2.6 | 90.5 | 108.6 | 38.5 |
| 2.8 | 84.0 | 100.9 | 35.7 |
| 3.0 | 78.4 | 94.2 | 33.3 |
| 3.2 | 73.5 | 88.3 | 31.3 |
| 3.4 | 69.2 | 83.1 | 29.4 |
| 3.6 | 65.3 | 78.5 | 27.8 |
| 3.8 | 61.9 | 74.3 | 26.3 |
| 4.0 | 58.8 | 70.6 | 25.0 |
| 4.2 | 56.0 | 67.3 | 23.8 |
| 4.4 | 53.5 | 64.2 | 22.7 |
| 4.6 | 51.1 | 61.4 | 21.7 |
| 4.8 | 49.0 | 58.9 | 20.8 |
| 5.0 | 47.0 | 56.5 | 20.0 |
| 5.2 | 45.2 | 54.3 | 19.2 |
| 5.4 | 43.6 | 52.3 | 18.5 |
| 5.6 | 42.0 | 50.4 | 17.9 |
| 5.8 | 40.6 | 48.7 | 17.2 |
| 6.0 | 39.2 | 47.1 | 16.7 |
| 6.2 | 37.9 | 45.6 | 16.1 |
| 6.4 | 36.8 | 44.1 | 15.6 |
| 6.6 | 35.6 | 42.8 | 15.2 |
| 6.8 | 34.6 | 41.5 | 14.7 |
| 7.0 | 33.6 | 40.4 | 14.3 |
| 7.2 | 32.7 | 39.2 | 13.9 |
| 7.4 | 31.8 | 38.2 | 13.5 |
| 7.6 | 30.9 | 37.2 | 13.2 |
| 7.8 | 30.2 | 36.2 | 12.8 |
| 8.0 | 29.4 | 35.3 | 12.5 |
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Note: conversions are rounded to 1 decimal place. |
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| MPG (US) | L/100km | Km/L | MPG (UK) |
|---|---|---|---|
| 10 | 23.5 | 4.3 | 12.0 |
| 12 | 19.6 | 5.1 | 14.4 |
| 14 | 16.8 | 6.0 | 16.8 |
| 16 | 14.7 | 6.8 | 19.2 |
| 18 | 13.1 | 7.7 | 21.6 |
| 20 | 11.8 | 8.5 | 24.0 |
| 22 | 10.7 | 9.4 | 26.4 |
| 24 | 9.8 | 10.2 | 28.8 |
| 26 | 9.0 | 11.1 | 31.2 |
| 28 | 8.4 | 11.9 | 33.6 |
| 30 | 7.8 | 12.8 | 36.0 |
| 32 | 7.4 | 13.6 | 38.4 |
| 34 | 6.9 | 14.5 | 40.8 |
| 36 | 6.5 | 15.3 | 43.2 |
| 38 | 6.2 | 16.2 | 45.6 |
| 40 | 5.9 | 17.0 | 48.0 |
| 42 | 5.6 | 17.9 | 50.4 |
| 44 | 5.3 | 18.7 | 52.8 |
| 46 | 5.1 | 19.6 | 55.2 |
| 48 | 4.9 | 20.4 | 57.6 |
| 50 | 4.7 | 21.3 | 60.0 |
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Note: conversions are rounded to 1 decimal place. |
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Tips for improving fuel economy
With the price of gasoline getting higher and higher, here are some tips for how you can help your own pocket, and the environment, by consuming less fuel when you drive.
- Steer clear of short trips when possible: cold engines can use 60% more gasoline than a warm engine (Energy Saving Trust).
- Check what you're carrying on your journey. Remove anything you don't need to take with you, such as roof racks, bicycle racks and items in your trunk. By saving on weight, you will save on gas consumption.
- Where possible, drive in the highest gear that you can without letting the engine labor. Driving a motor vehicle at 60 kilometers per hour in third gear can use 25 per cent more fuel than driving at the same speed in fifth gear (RAC, UK).
- Consider your speed. When travelling at 110 km/h you use approximately 30 per cent more gasoline than at 80 km/h, in the same gear. The most economical speed is said to be 65-80 km/h.
- Avoid heavy braking and apply the throttle pedal lightly. By braking heavily and accelerating quickly you waste fuel. Improving your driving in this area can save you up to 30% on fuel costs (RAC, UK).
- If you are stuck in a traffic jam for more than a few minutes, and it is safe to do so, switch off your engine. Modern cars now have a cut-off and restart mechanism for energy saving in these circumstances.
- If you don't really need to use your air conditioning, switch it off and open your air vents or windows. Switching off air conditioning can help decrease your gas consumption considerably.
- Get your motor car serviced regularly and ensure that you check tyre pressures at regular intervals and before long journeys. Incorrect tyre pressures can have an impact on fuel consumption, adding up to 2% to your fuel bill.
- Ask your garage to check your vehicle emissions and catalytic converter. According to the RAC (UK), 90% of badly polluting vehicles can be retuned by a garage within 15 minutes.
These fuel economy tips are here only a guide and you should consider your own circumstances before trying these ideas.
Conversion units for the Fuel Consumption Converter
Kilometers / Liter (km/L), Liters / 100 km (L/100 km), Miles / Gallon (UK) (mpg), Miles / Gallon (US) (mpg), Miles / Liter (mi/L),
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