Mile per gallon (imperial) to Mile per gallon (US) Converter
1 mile per gallon (imperial) is about 0.8326741846 miles per gallon (US). Convert miles per gallon (imperial) (mpg (UK)) to miles per gallon (US) (mpg) below: type a value and the result updates as you type.
mpg (UK) to mpg calculator
Result
Mile per gallon (imperial) to Mile per gallon (US) conversion
1 mpg (UK) ≈ 0.8326741846 mpgone mile per gallon (imperial) in miles per gallon (US)
1 mpg ≈ 1.200949926 mpg (UK)one mile per gallon (US) in miles per gallon (imperial)
Mile per gallon (imperial) (mpg (UK)): Miles driven on one imperial gallon (4.54609 L) of fuel. Used in the United Kingdom.
Mile per gallon (US) (mpg): Miles driven on one US gallon (3.785411784 L) of fuel. Used in the United States.
Source:NIST Special Publication 811 (2008), Appendix B.8
How to convert miles per gallon (imperial) to miles per gallon (US)
To convert miles per gallon (imperial) to miles per gallon (US), multiply the number of miles per gallon (imperial) by about 0.8326741846.
Formula
mpg = mpg (UK) × 0.8326741846
The factor is rounded here. The calculator uses the exact value.
Examples
- 30 mpg (UK) = 30 × 0.8326741846 ≈ 24.98022554 mpg
- 45 mpg (UK) = 45 × 0.8326741846 ≈ 37.47033831 mpg
- 60 mpg (UK) = 60 × 0.8326741846 ≈ 49.96045108 mpg
Mile per gallon (imperial) to Mile per gallon (US) conversion table
| Mile per gallon (imperial) (mpg (UK)) | Mile per gallon (US) (mpg) |
|---|---|
| 10 mpg (UK) | 8.326741846 mpg |
| 15 mpg (UK) | 12.49011277 mpg |
| 20 mpg (UK) | 16.65348369 mpg |
| 25 mpg (UK) | 20.81685462 mpg |
| 30 mpg (UK) | 24.98022554 mpg |
| 35 mpg (UK) | 29.14359646 mpg |
| 40 mpg (UK) | 33.30696739 mpg |
| 45 mpg (UK) | 37.47033831 mpg |
| 50 mpg (UK) | 41.63370923 mpg |
| 60 mpg (UK) | 49.96045108 mpg |
| 80 mpg (UK) | 66.61393477 mpg |
| 100 mpg (UK) | 83.26741846 mpg |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many miles per gallon (US) are in one mile per gallon (imperial)?
- One mile per gallon (imperial) is about 0.8326741846 miles per gallon (US).
- How do I convert miles per gallon (US) to miles per gallon (imperial)?
- To convert miles per gallon (US) to miles per gallon (imperial), multiply the number of miles per gallon (US) by about 1.200949926. The formula is mpg (UK) = mpg × 1.200949926.
- Is this conversion exact?
- Yes. Both units have exact definitions, but the factor has more decimal places than can be shown, so displayed results are rounded. The calculator works with 50 significant digits before rounding.
- Which is larger, a mile per gallon (imperial) or a mile per gallon (US)?
- A mile per gallon (US) is about 1.200949926 times larger than a mile per gallon (imperial). In other words, a mile per gallon (imperial) is about 0.8326741846 of a mile per gallon (US).