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Convert gallons per 100 miles (US) to miles per gallon (UK)

Here you can quickly calculate how many miles per gallon (UK) fit in one gallons per 100 miles (US).
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  • 1 gal/100 mi (US) = 120.094993 mpg (UK)
  • 1 mpg (UK) = 120.094993 gal/100 mi (US)

Example: gallons per 100 miles (US) to miles per gallon (UK)

  • 1 Gallons per 100 miles (US) = 120.094993 Miles per gallon (UK)

Gallons per 100 miles (US) to miles per gallon (UK) conversion table

Gallons per 100 miles (US) Miles per gallon (UK)
1 120.094993
2 60.047496
5 24.018999
10 12.009499
20 6.00475
50 2.4019
100 1.20095

Gallons per 100 miles (US) to miles per gallon (UK) formula

To convert gallons per 100 miles (US) to miles per gallon (UK), divide 120.094993 by the input value.

1 gal/100 mi (US) = 120.094993 mpg (UK)
Example: 1 Gallons per 100 miles (US) = 120.094993 Miles per gallon (UK)

Common fuel consumption conversion mistakes

  • US and UK mpg use different gallons: the imperial gallon (4.546 L) is 20% larger than the US gallon (3.785 L). The same car therefore scores about 20% higher in UK figures, 40 mpg UK ≈ 33 mpg US. Check which gallon a source means.
  • Mpg is inverted relative to consumption, so improvements are not linear: going from 10 to 20 mpg halves fuel use, while 40 to 50 mpg cuts it by only a fifth. Convert to l/100 km when comparing savings, that scale is proportional to actual fuel burned.

Quick gallons per 100 miles (US) and miles per gallon (UK) conversion quiz

Score: 0

6.3 gallons per 100 miles (US) equals 9.53 miles per gallon (UK).

Correct answer: 6.3 gallons per 100 miles (US) = 19.1 miles per gallon (UK).

200 gallons per 100 miles (US) equals 0.6 miles per gallon (UK).

Correct answer: 200 gallons per 100 miles (US) = 0.6 miles per gallon (UK).

49 gallons per 100 miles (US) equals 1.47 miles per gallon (UK).

Correct answer: 49 gallons per 100 miles (US) = 2.45 miles per gallon (UK).

More fuel consumption conversions