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UK MPG to L/100km Converter

Convert UK imperial miles per gallon to liters per 100 kilometers and L/100km to UK MPG. Inverse fuel economy converter.

mpg (UK)

Liters per 100km

8.83

L/100km

32 mpg (UK) = 8.83 L/100km

L/100km = 282.481 ÷ mpg (UK)

Miles per Gallon (UK) to Liters per 100km: To convert miles per gallon (uk) to liters per 100km, apply L/100km = 282.481 ÷ mpg (UK). Unlike linear unit conversions, miles per gallon (uk) and liters per 100km use different zero points, so a fixed multiplier is not sufficient.

How to Convert Miles per Gallon (UK) to Liters per 100km

Converting between miles per gallon (uk) and liters per 100km requires both a scale factor and an offset because the two scales use different zero points. The formula below handles both adjustments.

Conversion Formula

  • Miles per Gallon (UK) to Liters per 100km: L/100km = 282.481 ÷ mpg (UK)
  • Liters per 100km to Miles per Gallon (UK): mpg (UK) = 282.481 ÷ L/100km

Miles per Gallon (UK) to Liters per 100km Conversion Chart

Miles per Gallon (UK) (mpg (UK))Liters per 100km (L/100km)
0.12824.81
0.251129.924
0.5564.962
1282.481
2141.2405
394.160333
556.4962
1028.2481
2014.12405
2511.29924
505.64962
1002.82481
2501.129924
10000.282481

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US MPG to UK MPG Converter

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UK MPG to US MPG Converter

Convert UK miles per gallon (imperial) to US miles per gallon.

FAQ

How do I convert UK MPG to L/100km?

Divide 282.481 by the UK MPG value. For example, 40 UK MPG = 282.481 ÷ 40 = 7.06 L/100km.

Where does the 282.481 constant come from?

It combines imperial gallons to liters (4.54609 L/gal) with miles to kilometers (1.60934 km/mi). The constant is 4.54609 × 100 ÷ 1.60934 = 282.481.

Why is the constant different from US MPG to L/100km?

US MPG uses the constant 235.215 because US gallons are smaller (3.78541 L). UK imperial gallons are larger (4.54609 L), giving 282.481.

What is 45 UK MPG in L/100km?

282.481 ÷ 45 = 6.28 L/100km. This is considered good fuel economy for a European diesel car.

Is this useful for comparing UK and European car reviews?

Yes. UK publications often quote MPG (imperial), while European publications use L/100km. This conversion lets you directly compare fuel economy figures.

How do you convert miles per gallon (uk) to liters per 100km?

Apply the formula L/100km = 282.481 ÷ mpg (UK). For example, miles per gallon (uk) of 0 corresponds to Infinity liters per 100km.

How do you convert liters per 100km back to miles per gallon (uk)?

Use the inverse formula: mpg (UK) = 282.481 ÷ L/100km.

Why isn't miles per gallon (uk)-to-liters per 100km a simple multiplication?

Miles per Gallon (UK) and Liters per 100km use different zero points, so the relationship includes both a scale factor and an offset. The scale factor alone gives the rate of change but not the absolute value.