What is 1 Miles per gallon (Imperial) in US gallons per 100 miles?

1 Miles per gallon (Imperial) = 120.095 US gallons per 100 miles (mpg (Imp) → gal(US)/100mi).

What is the formula to convert Miles per gallon (Imperial) to US gallons per 100 miles?

gal(US)/100mi is a non-linear (reciprocal) function of mpg (Imp) Example: Use the converter above for an exact computed value..

No — the factor is approximate to engineering precision. The page surfaces an "Approx" badge whenever the relationship is not defined exactly.

Convert miles per gallon (imperial) to us gallons per 100 miles instantly. The conversion factor is approximate to engineering precision.

Realtime·fuel-economy·uk

Approx1/x

From

mpg (Imp)

1/x

Result

gal(US)/100mi

120.095

Precision [auto]

gal(US)/100mi is a non-linear (reciprocal) function of mpg (Imp)

Worked example: Use the converter above for an exact computed value.

Miles per gallon (Imperial) (mpg (Imp))

United Kingdom vehicle fuel economy ratings.

US gallons per 100 miles (gal(US)/100mi)

US EPA secondary metric.

Miles per gallon (Imperial) (mpg (Imp))	US gallons per 100 miles (gal(US)/100mi)
10	12.0095
15	8.0063
20	6.0047
25	4.8038
30	4.0032
35	3.4313
40	3.0024
45	2.6688
50	2.4019
55	2.1835
60	2.0016
70	1.7156
80	1.5012

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

GET https://convertnavi.com/api/v1/convert?value=10&from=mpg-imp&to=gallon-us-per-100mi

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