MPG (UK) to gal/100mi (US) Converter
Convert MPG (UK) (mpg UK) to gal/100mi (US) (gal/100mi) instantly. These units have an inverse relationship — use the converter above for accurate results.
Common Fuel Economy Conversions
MPG (UK) to gal/100mi (US) Conversion Table
| MPG (UK) (mpg UK) | gal/100mi (US) (gal/100mi) |
|---|---|
| 5 mpg UK | 132.887578 gal/100mi |
| 10 mpg UK | 66.443789 gal/100mi |
| 15 mpg UK | 44.295859 gal/100mi |
| 20 mpg UK | 33.221895 gal/100mi |
| 25 mpg UK | 26.577516 gal/100mi |
| 30 mpg UK | 22.14793 gal/100mi |
| 35 mpg UK | 18.98394 gal/100mi |
| 40 mpg UK | 16.610947 gal/100mi |
| 50 mpg UK | 13.288758 gal/100mi |
| 60 mpg UK | 11.073965 gal/100mi |
| 80 mpg UK | 8.30547364 gal/100mi |
| 100 mpg UK | 6.64437891 gal/100mi |
How to Convert MPG (UK) to gal/100mi (US)
MPG (UK) and gal/100mi (US) have an inverse (reciprocal) relationship — one measures how far you go per unit of fuel (efficiency), while the other measures how much fuel is needed per distance (consumption).
To convert, the value is first expressed as km/L, then the target unit's formula is applied. A higher mpg UK value corresponds to a lower gal/100mi value (better economy in both cases).
Example: 30 MPG (UK) ≈ 22.14793 gal/100mi (US)
Frequently Asked Questions
About These Units
A fuel efficiency unit. Measures how far a vehicle travels per unit of fuel — higher is better.
A fuel consumption unit. Measures how much fuel a vehicle uses per unit of distance — lower is better.