Uk Mpg to Us Mpg
Imperial miles per gallon uses the larger UK gallon, so the same vehicle shows a higher mpg figure than in the US system. US miles per gallon states how far a vehicle travels per US gallon of fuel, the standard fuel economy rating in the US. 1 mpg UK equals ≈0.832674 mpg, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to fuel economy, measured here against fuel economy's base unit (L/100km) — every other fuel economy unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
mpg = mpg UK × ≈0.832674
mpg UK = mpg × ≈1.20095
Worked example: 5 mpg UK × ≈0.832674 = ≈4.16337 mpg.
Conversion table
| MPG (UK) (mpg UK) | MPG (US) (mpg) |
|---|---|
| 1 mpg UK | ≈0.832674 mpg |
| 2 mpg UK | ≈1.66535 mpg |
| 3 mpg UK | ≈2.49802 mpg |
| 5 mpg UK | ≈4.16337 mpg |
| 10 mpg UK | ≈8.32674 mpg |
| 20 mpg UK | ≈16.6535 mpg |
| 25 mpg UK | ≈20.8169 mpg |
| 50 mpg UK | ≈41.6337 mpg |
| 100 mpg UK | ≈83.2674 mpg |
| 250 mpg UK | ≈208.169 mpg |
| 500 mpg UK | ≈416.337 mpg |
| 1,000 mpg UK | ≈832.674 mpg |
Frequently asked
- How many MPG (US) in a mpg (uk)?
- 1 mpg UK equals ≈0.832674 mpg.
- How do I convert MPG (UK) to MPG (US)?
- Multiply the value in mpg UK by ≈0.832674 to get mpg. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — MPG (UK) and MPG (US) are both defined by a fixed conversion factor to fuel economy's base unit (L/100km), so the result shown is exact to the precision displayed, not an approximation.