US mile per gallon to Imperial mile per gallon
Convert US mile per gallon (mpg US) to Imperial mile per gallon (mpg Imp).
Formula and method
result = value × (0.425143707 ÷ 0.35400619).
The source value is converted to the catalog’s canonical unit, then expressed in the target unit.
Worked examples
These examples use the same conversion engine as the calculator.
- 1 mpg US1.20094992 mpg Imp
- 5 mpg US6.00474962 mpg Imp
- 10 mpg US12.00949924 mpg Imp
Common US mile per gallon values
| US mile per gallon (mpg US) | Imperial mile per gallon (mpg Imp) |
|---|---|
| 1 | 1.20094992 |
| 2 | 2.40189985 |
| 5 | 6.00474962 |
| 10 | 12.00949924 |
| 25 | 30.0237481 |
| 50 | 60.0474962 |
| 100 | 120.09499241 |
| 250 | 300.23748102 |
| 500 | 600.47496203 |
| 1,000 | 1,200.94992407 |
How to convert US mile per gallon to Imperial mile per gallon
- Enter a value in US mile per gallon in the converter above.
- The calculator converts it using the catalog’s linear method.
- Choose the decimal precision you need,then copy the displayed result if useful.
Frequently asked questions
What is the formula for US mile per gallon to Imperial mile per gallon?
result = value × (0.425143707 ÷ 0.35400619). The source value is converted to the catalog’s canonical unit, then expressed in the target unit.
Can I convert Imperial mile per gallon back to US mile per gallon?
Yes. Use Swap Units when the reverse pair is available in the catalog. The page URL changes to the reverse conversion and the entered value is retained.
Why can a value be rejected?
The engine rejects non-finite values and negative values for units that do not allow them.
How are displayed decimal places chosen?
Use the Decimal precision selector above the result. Very large or very small results switch to scientific notation when that makes the value easier to read.