Miles per Gallon (Imperial) to Miles per Gallon (US)
Convert miles per gallon imperial to miles per gallon US with our expert guide and calculator
Uses standard fuel economy conversion formulas. · Updated 2026-05-29
Fuel Efficiency Calculator
Miles per Gallon (Imperial) to Miles per Gallon (US) Conversion Table
Common Miles per Gallon (Imperial) to Miles per Gallon (US) conversion values
| Miles per Gallon (Imperial) | Miles per Gallon (US) |
|---|---|
| 1 mpg (Imp) | 0.833 mpg |
| 10 mpg (Imp) | 8.326 mpg |
| 50 mpg (Imp) | 41.632 mpg |
| 100 mpg (Imp) | 83.264 mpg |
| 500 mpg (Imp) | 416.320 mpg |
| 1000 mpg (Imp) | 832.639 mpg |
The formula
Fuel economy conversions use reciprocal relationships (e.g. L/100km ↔ mpg). Enter a value in the calculator — the conversion is not a simple multiply.