Mile per gallon (US) to Mile per gallon (imperial) Converter
1 mile per gallon (US) is about 1.200949926 miles per gallon (imperial). Convert miles per gallon (US) (mpg) to miles per gallon (imperial) (mpg (UK)) below: type a value and the result updates as you type.
mpg to mpg (UK) calculator
Result
Mile per gallon (US) to Mile per gallon (imperial) conversion
1 mpg ≈ 1.200949926 mpg (UK)one mile per gallon (US) in miles per gallon (imperial)
1 mpg (UK) ≈ 0.8326741846 mpgone mile per gallon (imperial) in miles per gallon (US)
Mile per gallon (US) (mpg): Miles driven on one US gallon (3.785411784 L) of fuel. Used in the United States.
Mile per gallon (imperial) (mpg (UK)): Miles driven on one imperial gallon (4.54609 L) of fuel. Used in the United Kingdom.
Source:NIST Special Publication 811 (2008), Appendix B.8
How to 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.
Formula
mpg (UK) = mpg × 1.200949926
The factor is rounded here. The calculator uses the exact value.
Examples
- 20 mpg = 20 × 1.200949926 ≈ 24.01899851 mpg (UK)
- 30 mpg = 30 × 1.200949926 ≈ 36.02849777 mpg (UK)
- 50 mpg = 50 × 1.200949926 ≈ 60.04749628 mpg (UK)
Mile per gallon (US) to Mile per gallon (imperial) conversion table
| Mile per gallon (US) (mpg) | Mile per gallon (imperial) (mpg (UK)) |
|---|---|
| 10 mpg | 12.00949926 mpg (UK) |
| 15 mpg | 18.01424888 mpg (UK) |
| 20 mpg | 24.01899851 mpg (UK) |
| 25 mpg | 30.02374814 mpg (UK) |
| 30 mpg | 36.02849777 mpg (UK) |
| 35 mpg | 42.03324739 mpg (UK) |
| 40 mpg | 48.03799702 mpg (UK) |
| 45 mpg | 54.04274665 mpg (UK) |
| 50 mpg | 60.04749628 mpg (UK) |
| 60 mpg | 72.05699553 mpg (UK) |
| 80 mpg | 96.07599404 mpg (UK) |
| 100 mpg | 120.0949926 mpg (UK) |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many miles per gallon (imperial) are in one mile per gallon (US)?
- One mile per gallon (US) is about 1.200949926 miles per gallon (imperial).
- How do I 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. The formula is mpg = mpg (UK) × 0.8326741846.
- 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 (US) or a mile per gallon (imperial)?
- 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).