Miles per Imperial Gallon to Miles per US Gallon
Free instant miles per imperial gallon to miles per us gallon converter. 1 mpg = 0.832674 mpg.
Common Miles per Imperial Gallon to Miles per US Gallon values
| Miles per Imperial Gallon (mpg) | Miles per US Gallon (mpg) |
|---|---|
| 1 | 0.832674 |
| 5 | 4.16337 |
| 10 | 8.32674 |
| 25 | 20.8169 |
| 50 | 41.6337 |
| 100 | 83.2674 |
| 500 | 416.337 |
| 1000 | 832.674 |
How does Miles per Imperial Gallon to Miles per US Gallon conversion work?
Type a value in the Miles per Imperial Gallon (mpg) field and the equivalent in Miles per US Gallon (mpg) appears instantly to the right. The math uses the exact formula shown above — no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.
Miles per Imperial Gallon. The UK fuel-economy unit. About 1.2× higher than US mpg because the imperial gallon is bigger. 40 UK mpg ≈ 33 US mpg.
Miles per US Gallon. The standard fuel-economy unit in the US. HIGHER is better — 30 mpg is decent; 50+ mpg is excellent.
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Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.
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